Thread: Fuel Pressure Prime Question

he has a r/t and i think conzult or something, so he can actually..

that breather... lol.. is to the steering rack.. (no ps)

Here are pictures of that steering rack breather in question

Hopefully you can find someone that has one - best bet would be to check at a smog station or an exhaust shop.

Ok put the new NGK plug wires on, problem still exists but I idled the car with the MAF unplugged so I could properly tester the injectors and all effected the engine when I unplugged them each so looks like they are ok. Once I plug the MAF back in the idle turns to leaned out crap

UPDATE

Did a boost leak test and found a few things. First of all i found this. The angle pipe was plugged but the one my finger is on behind it had a screw plug that came out. What I did was got a hose and just looped them to each other.


Next i found a very small leak from one of the couplers, turns out there was a small piece of pipe connecting a regular coupler with a 90 degree one to make it longer and the previous owner used one T boly clamp to hold both couplers to that connecting pipe. I added another clamp so they each had their own like it should have been to fix that one.

Next i found my BOV was leaking the air i pumped in. I had previously taken out one of the inside springs because I had heard that if you running low boost (10psi) the bov wont open with both springs. Taking the small one out solved this but i put it back in and we'll see if i can get it to work with both in it. Not sure if i can mark this one fixed just yet. Sure it doesnt leak anymore during my boost leak test, but i have to make sure it opens like it should when i run the car

Lastly I found that a very small amt of air is escaping from the top of my MAF. I'm going to expoxy that little slit and then run the car and see what happens. I dunno if solving boost leaks will help with the idle at all , but at least its problems i wont have to deal with later.

FUCKKKKKKKKKKKKKKKKKKKing Shiiiit

So i went to TDC compression stoke, and tested for leaks on the manifold, nothing. It held air just fine. So Now that im 99% sure im leak free I started it up and i'm still getting the damn rough idle and poor vacuum.....I dont know where else to go from here.

Perhaps find a known working MAF to test on it? I'm getting ready to swap over to draw thru but by the previous owner the car was tuned for blow thru and I ran it for awhile on blow thru. So maybe in the long run going draw is in my best interest but i doubt itll out right fix this issue that I cant seem to find the source of

WHAT HAPPENED HERE???

Ok so I noticed my TPS voltage was .08 and I adjusted it up to .42 then I fired up the car and it was idling fine. Little high like 1500 but the vac went back up to like -18ish and the AFR was a little better at 17. So I was feeling better about it. I let it idle like that for about a half hour or so to be sure it wouldnt die. Then i came out, turned it off and let it rest for about a half hour. Then I turned it back on it and it was idling at about 1300. I decided to turn the IACV screw a full turn to the right but noticed it didnt really change much so i moved it back a half turn. I turned the car back off and let it sit for about another half hour or so then i turned it back on to move it and this time it ran EXACTLY how it did before. Like i didnt touch it or fix anything. Back to leaning out and idling rough. I put the IACV back exactly were it was to make sure everything as it was (except for the TPS still reading at .42) and started it again, still rough........what happened here? Could it be on the 3rd start up the ECU learned what I had changed and adjusted itself to run like it was before or something? Perhaps something in the tune learned what i had changed or something? I'm at a total loss for what could have happened here? Could my Calum RT ecu being shitting the bed? I noticed this time to when i unplugged the MAF the RPMs kinda bouced between a rough 300 or so up to 1k, and wasnt smooth like it had idled before with the maf removed. It still went rich tho like it had before with the MAF removed.

what, no UPDATE!!!!!??? lol

so i remoted this mofo's laptop, an used a combo of nistune/tunerpro r/t to get his idle afr dialed in.. i took a stock de bin that matched his ecu part # and copied the timing map from it, then set it for n60 maf an 370 injectors, then adjusted the kvalue an fuel map where it idles until i got it to 14.8 afr.. he took it for a spin an drove it nicely an said it was doing pretty good, no more rough as shit idle and the vac went up (more negitive) a tad bit..

he took a log for me that i'll look at probably tomorrow or something, not sure what all he did in it but we'll continue to do that until the 3 basics are covered, cruise, transition and boost.

needles to say he was happier then hippie with a bag full of grass! or atleast i was a few hours later

lol! Yes thank you Josh, but I hadnt gotten to the update cause I was out driven that bish! I only had the chance to get in one "pass" around the block becuz of having to get to sleep. Havent gotten it up in RPM to much due to my neighborhoods roads not being very straight lol but didnt run into any issues. I recorded it and i'll try to get it longer straight roads so I can get a chance to dial in to 0 like we talked about. Shes got a full tank of gas i been dying to burn =]

Noice!