running so rich it could be I have NFI what I'm doing

[rumptis]

does it run rich when just cruising along at a steady speed?

 

[dbsupra90]

and how about boost leak as mentioned? did you inspect and pressure test the system?

btw, my v8's get 24 mpg and 19 mpg

 

[monkihead]

off boost cruising no. if i give it more than half throttle it begins to peg rich as soon as boost kicks in.

 

[monkihead]

and how about boost leak as mentioned? did you inspect and pressure test the system?

btw, my v8's get 24 mpg and 19 mpg

my dads gets 5mpg on a good day. I tightened up everything again, but will do a pressure test in the morning.

 

[rumptis]

Ok, you have a boost leak. Check all your IC piping. The pips can crack and you could even have a hold in your IC.

It can be hard to track down so take your time but from everything you have said I'm sure that is your problem.

 

[a_sesshoumaru]

What about your fpr? it happened to me once when the VSV got completelly blocked and did not allowed vacumm to the fpr

 

[TurboStreetCar]

sounds like classic boost leak, im sure that massive boost spike from the wastegate hose bieng off didnt help any of the IC couplers.

 

[Datsrboi]

Boost leak, Bad coils, Sparkplugs, Timing, AFM, Could be any of those. Check everything one at a time.

 

[monkihead]

On the drive to my dad's place this morning I got a huge clue that its a boost leak. I've never, ever been able to get 7psi @ 2k rpm in first gear. I've never had a boost leak like this before, so it sounds like i should replace all the pipes and couplers.

 

[idoke]

Check your accordian hose. My supra ran rich because it was cracked, BADLY. I replaced it with another one and it ran great. But like you said, your best luck is to replace all pipes and couplers.

 

[rumptis]

A leaking accordian hose would cause you to run lean.

 

[monkihead]

I pressurized the system up to 7psi and heard a small hiss. I cranked it up to 20psi and it showed its' self. the throttle body to 3k pipe just gave way. It appeared to be a line in the molding. I replaced it and tried again. for kicks, I cranked it up to 40psi and no leaks. It has minor hesitation problems but I figure its from the fouled out plugs.

Thanks guys, its been a roller coaster ride from hell.

 

[flight doc89]

I pressurized the system up to 7psi and heard a small hiss. I cranked it up to 20psi and it showed its' self. the throttle body to 3k pipe just gave way. It appeared to be a line in the molding. I replaced it and tried again. for kicks, I cranked it up to 40psi and no leaks. It has minor hesitation problems but I figure its from the fouled out plugs.

Thanks guys, its been a roller coaster ride from hell.

lol, thats the same place mine cracked. hoorah on a problem fixed

 

[Poodles]

woooot, boost leak said on the first page...

I know, I have hardpies and was in denial, until I found the damn leak and sealed it...

only issue with boosted cars IMHO...

 

[TurboStreetCar]

only issue with boosted cars IMHO...

untill you go speed density....:biglaugh:

 

[veedubin]

untill you go speed density....:biglaugh:

AMEN! :naughty: I'll be going speed density after the rubuild is complete

 

[Poodles]

doesn't matter, boost leak = low power

could damage the turbo as well...

 

[fcjoe58]

When you guys say accordion do you guys mean intake tube for the cold side of the turbo? I'm having similar problem

 

[7M4EVR]

When you guys say accordion do you guys mean intake tube for the cold side of the turbo? I'm having similar problem

Yes, get's brittle over time and this happens often..



Then things like this happen:

 

[fcjoe58]

Yes, get's brittle over time and this happens often..
View attachment 71690


Then things like this happen:
View attachment 71691

Oh man i been running it with a big ass cut like 4 inches down the middle of that hose �� I just re did the timing and been diagnosis all day and your telling me it's a dam cut on the intake tube lol... I checked around all dealers they want 70 - 120 for it.... thanks guy