best affordable fuel efficient suv

alright, i guess we'll call this part 2 ofour fuel pump, right? because we already did our part 1 video so what i wanted to do before we put thispump in, is show you guys one thing that i was not able to show cause i have hadthe car at a no start at one point in time and thatwas the pressure drops on a snap and then this is a cold start tooso we'll actually get an opportunity to see what this looks like on a on a crank, go ahead and crank that dave.see how slow that pressure built up and you saw it, i mean, it was actuallyable to start

you know at twenty pounds of pressure and i did make that statement before that that this system should start where we werebut the reason it wasn't was because it was so vapor locked so we're at 42 psi for 40 psi, that'spretty much my guess is that pretty close to normalfor an idle pressure on this car and i'll i'm going to take the vacuumhose of the regulator again the very slight increase, six to ten in that range is what we want to have. right now we should be moreabout 54-52 psi and then here's the key would be

when you do these kinda pressure checkstake the vacuum hose off the regulator and then snap the throttle, never want tosee a drop in pressure during that event i mean a momentary little hiccup isokay but we never want to see that so that again can be regulator, fuel filter, fuel pump, we've addressedall of that already we know we need a pump and that was justone aspect of my last video i was not able to show if this vacuum hose was connected what this would look like is when i snapit that pressure would rise because we

are losing vacuum to the regulator and ona good system thats what we'll see so we'll revisit this test one more timeafter we get the pump in and ah, we'll redo our rpm and we'll redo our pressurechecks and and amperage measurements too. one more time, this with the vacuum hose plugged in it won't be any different because this regulators never opening were neverreaching the regulated pressure so it's gonna do the same thing, never wannasee that, that is always a week fuel pump, well i don't want to sayalways a week fuel pump that would always be a fuel delivery problem whenyou see that.

okay so we finished the car this is the crew to put my fuel pump infor me they wanted to be on film this i said these are my star pupils ihave another guy behind me use also won its not in the film here i've ubuntu starpupils this term larry is right there although the guyjust came the picture wasn't really help in two months on the job but will stillgive you some props anyway so it's dana and nikki and carmine anzac and and dave how is that i wasn't bad burnonly know you guys are like three weeks

i'll nice job these are our i so my guysheroes del tack so props to them back on the car alsothe result of this new fuel pump are we have the car running already hereguys and also it often that you see how fast this builds pressure but but whatwe can see right away is a big difference in our idol pressure and i think maybe the first test alsoyou guys would be the vacuum hose of ovi regulator dana can you

paul the vacuum hose offer the fuelpressure regulator for me so we can watch the pressure gauge i that's okay naked and whatever thankyou i look at the gates were what happened wewent from let's put the put the line back on itswatch it again so we what's that number about 40 a 47 so 47 ps i take the vacuum hose off and we went to looks like about 57 hazzard by the 10psi difference from

i told to which this would be a just soyou guys understand this is a simulated wide open throttle presser wide open for all there is no vacuum sowhen you take the vacuum those of a regulator this is a way that you can simulate yourkey on engine off or wide open throttle presser nowgranted the injectors are opening much so it's not really a volume test but itis a good test an arm to match what we did before weactually get our stop protests with that vacuum hose off so let's leave that of

watch the pressure gauge will do thesame thing we did before up yes please can you do that day noticethe gates didn't drop although that was kinda 0 a little was the rest their day armgimme a gimme a rev a good line give me a rego i no i read that even more than as earlyas i want you to do as fast as you can let me finish as fast as you can so wideopen hold it till we hit the rev limiter thanlot of i was better you see that little bit of a blip inthere that's okay i'll i don't mind that

you see the difference in in what we had before we were around 48was drawn to 35 so we're low from the get-go you never want to see that kind of adrop on an excel go ahead do it again a little bit of a blur no problem thereat all and soul this test what we call this isa volume test what we're doing is we're opening theinjectors of were making sore that the parking key presser when theinjectors are opening and this is a much better are testingjust looking at fuel pressure say status

yeah the reason i had the vacuum line of was that was what we did last time justto simulate the beyond yes and no will do the same test with the vacuumline on this times you guys understand why like to leave it off yeah i do it now and i know daveprobably can't see the pressure gauge but what was happening got it now danza defrancia what's happening here is the pressuregauge is rising

you just hit the rev limiter that wasall is ok to watch it again do same thing and you seehow the presser actually went down below what are idle pressure was off what arm sack do that said dana can see it one more time good you feel thatpressure actually drop to rate their not so i was telling you guys that itdropping at that moment not a problem because that's a the seller that we're back into veryhigh in the manifold there's times it's okay to drop and that would beduring the cell he saw during our excel

it it increased during the the celldecreased and then back to idle and that's whywhen i do this test always tell you guys take the vacuumhose of the do it because it's a much more stable pixar and you'll have to interpret thegauge moving around in when n where n is thatnormal is that not normal you leave the vacuum hose often do thetest pressure should drop on us now vacuum hose attached you have tointerpret what you're looking at make sure that it doesn't drop

on excel we don't care about the self sowatch it one more time on the excel it's actually going of on the accel losing back and that it on the sellvacuums even higher than i don't let it drop completely normal numbers we have now lets our set this car of and let'slisten to how it it cranks up here after a a few a good start a backup

sell faster pressure came up to night and adifferent now we can't drain this out and see how fast it comes up but i'llhave a container to do that are shut that offand then turn the key back on for me are the final the final thing i want toshow you guys for this cars were gonna redo our rpm and our current for this feel part atthe fuse box and we'll compare that to what we had before alright so we are going to redo this amperagetest

and just to use the same told i knowfrom some other comments i know there's other ways to do this ijust have one of these in it's called so i'm using it and omp wehad which won the relay adapters i believeit was our it was the smaller one right okay and and i believe it was this top related torate so use the trustee pocket screwdriver tohelp us everybody's has to have won at least i don't know if is that camera shown onthat this one actually has 5 repins

i say that's a two inch screen so iremember that also up a lot better as long as its in there were good arm this 5-pin this middle pane isactually not being used if you look in the park distribution boxers nope inthere and what we're using is a four pinadapter it's completely fine on if you know anything about 5-10relays that is the normally close contact with three typically don'tuse any way arm so just a little little piece in fortheir and this is actually coordinator thatyou can't get it back or side think

about being able to plug this inbackwards if you're going to energize with thistool you're gonna cook the nz computer and that was one of the reasons i likethe toll and i had some people commenting about hey use a jumper wireon file with a jumper wire here the problem with a jumper wire if you'renot extremely careful annual john exactly pains 3887 andrealize when you're looking at it this way that when you turn it around it flipswhere you're out it is very easy to going here with a jumper wire andjump the wrong pens turn the key on you

just caught the computer driverimmediately so i know there's other ways to do it theyactually make some tools to that are pretty neat that you can plugin a adapter and plug the relay into that andthen the adapter has pains that come out that you can jump the relay that way those are coolbut look i'll tight this box its in this situation we have a said thoseicy in the tool room arm in this situation you're not goingto be able to use that whole it's not going to fit so for what we'redoing here this was the ideal tool

and turning our part on or store gaugesin that screen still to tcu gates alright so we flip that gator the butyou see the fuel pump is running very easy to see it this time are nowenemies do is get my vantage pro back over here said thatback up okay so what i'm what i'm doing thenturn the fuel pump on clipping my amprobe 20 amp scale 08online wires and that is the load side of thepart that we're jumping at the relay box and i'll get you guys all focused on theon the vantage pro hearsay what's a that noise would be if you'reunder the fuel rail

so good question out we're actuallypumping it in on the pressure line and were here it's going through therail and what you're hearing as a regulator opening and it's running backon the return lot the reason you didn't hear that beforeas the regulator was never open it so you could hear was just a staticpumping fuel into the rail no fuel being played on the return of sogood quest i'm going to just go to by labs go yes i'm going to go low amps 20 if you guys remember our are old partwas about 24 milliseconds for one

rotation and are averages definitely higher so we have a a damp have current flownow we're two and a half before and i it's going to be tough to seeunique characteristics and that in this subpart spending wayfaster too and that was actually to faster the time base move this down it's going to be tough to see uniquecharacteristics in a brand new fuel park also remember this is in a bar partmiller only reason we know that is because it'sa gm arm

as and really you're just going to haveto take are my word on that that gm use aitbaar feel palms is my armblock in my good in there okay i'm just movingthis down so we can see it you see we're covering above and belowor on a damp the current so there's actually 6.8 as a minimum nine as a maximum i'm not sure that's exactlydropping a 68 because it could have caught that first turn on so that sri fresh thatthat's the spine

and we'll see a min max for sure hereyeah 6.8 to 8.9 amps lot different and we'll get a harpy a measurement by freezing the picture and there's our asset all the curses andby accident there first its okay will freeze that pictureand then what we'll do is place or cursors a apart so start without 112 3 45 67 i need to move that over just alittle bit more

hot darn it i k do that all the time itthe wrong but with this tool that's my cursors there's to leave them on the screen pause it trythat again move this cursor to hear that's one 234 567 8 and then back to one would be rightthere a so 1,2,3,4,5,6,7 8 1 we have one rotation that isoccurring 13 milliseconds now we do our math with13 milliseconds

yes have your phone on you you do thatfor me do arm 60,000 divided by 13 points to to be about flood yes 13.22 so its 4,500 45rpm response running outright now as compared to 2500 rpm just shown to befour and after not again not that the rpm asthma is necessaryhere but a drastic difference in both rpm and amperage no question about it

we made the right call thank you verymuch olive you for helping this this was a great one my future classes thank you to so of course we're not done yet we neverare i'm always like one more thing one more thing one more thing i figured why not revisit this 02 wideopen throttle test that we did there was one of the first things withinthe classroom if you guys remember we use this as a guide t to say hey wehave a fuel issue we have a fuel delivery problem we did

and so i i believe i pulled up the samedoubt appeared let's let's give you a perspective here this is tps top leftthat's percentage engine rpm there's my 02 upstream andthen looking at mass air flow grams for sacking arm so i frequency sogo ahead and snap that for me k and i wants you to do that again yeah and its it's tough to see it but let's see if we can zoom and look atthese frames stew that one first or do this snap here's mytps oh about

7 again my curses i can't really showyou too well arm you know what we could try this timeamiri do this one more time we'll will stop collecting data reset theframes and as soon as a frames reset hit that for me now it two or more time let me let the go to stabilize hang on trattoria i'm just reset in the frames i want tobe able to move my cursor arm okay stop it

that was probably ago when it's causethat and hopefully it'll let me see actors still snap-on pay attentionfix this for me now this is ridiculous i should have controlthis all the time not just at this zoom doubt level but i wanna show you guys and i'm havingdifficulty moving this way i want it arm during the tps rev if you look here the first thing you're gonna see and idon't know if i made this clear in the last part but of course the tps is goingto be the reaction to the tps is going to befor so before you see

anything taking place here before therpm is rising you can see the tps signal increase first that would make sense the tps is yourinput everything's reactionary after that so your initial step in of that you it's not uncommon to get a firstinitialed drop in the o2 and i did mention that asthis rpm starts to climb in your mass air flow frequency is climbing now that still lean isn't ithack

i want that to be rich there in thatevent unless i'm missing it and that is my rich event right there it is i'm just of a frame so as we readthis and i really need is m hang on frustrated okay let's do this again let this fill up a little bit on i can'tuse these cars taking me away give me a wide open for all of that do it again hold your pm's up for me to like togranites get this 02 warman react i get the reaction of a good

are that i don't what we're reallyhaving trouble with on this car with this test is this rev limiter that's on we hitmiss revlon matter its gonna cut the injection paulson i'mgonna have an issue so and in the thing is we can't hold it uphigh enough for long enough period time to really get a good picture of this tried again me a lot andross now and i heard the rev limiter right therebut if you watch this just leave it live you see when this is climbing

02 is rich right here of course rightafter that it's not you know right where you're leading offor rate at the end that maybe before he let off because this thing has that revlimiter i think we can we could probably usethis capture at 295 maybe 297 i'm starting to are climb in my rpmimass air flow signal is climbing there's 295 rehear and then what do yousee without 02 saying all right there during that yes it is 295

there's 295 map signal climbing where wenotice with the o2 02 is now going rich as opposed to befour on that 02 was dropping wean and somaybe you guys maybe understand it the test a little bit more this is what we wanna see this is goodfuel delivery this test is tough to do sometimes withthis can talk as a reaction to the scandal and update their and then combined with the rev limiterme and how sort a period of time we can actually holdits wide open

makes this test difficult it wasvaluable to us before we can see the after results are justwanted to show that