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Hi I'm new and have a p0171 code, can you help?

Just one rail, one fitting and one check.

FSM says to hook up the gauge and key click on/off a bunch of times, but you don't start the car. Bleed the air out of the gauge. Then click the key about 10 more times and you should have 45-52 for a reading. Then leave the car alone for 10 minutes (key off) and read the gauge. It shouldn't go down more than say a couple of psi.

Personally, I've seen cars pass the key click test easily. I tend to like to get a driving test. That way you can see if the pump can actually keep up with the motors demand.
 


I was reading pwnd's post on another thread and he mentioned that the MAF screen is in good condition. That's the screen on the throttle body opening right. Mine has a small hole could it be the cause of the problem?
 
The car has been at my friend's shop he says supercharger gasket and the throttle body itself is leaking. Do Throttle bodies go bad?
 


trying to detect a stumble via carb cleaner is nearly impossible... with 2 people, 1 spraying and one watching the tach like a crazy person can SOMETIMES detect a medium/large leak.
 
Re: P0171 back again!!!!

can you get a data log? have you tested fuel pressure? have you checked the fuel pressure regulator?
 
Re: P0171 back again!!!!

Had the car smoke tested. They are telling me my throttle body and upper intake manifold gasket are leaking....... I'm waiting on a new TB to arrive and I guess I'm doing a whole new gasket set might as well since the LIM is failure prone with the mileage on this car. Never took out a fuel injector though... I watched the video on this board good stuff but how do you take the injectors out?
 
Re: P0171 back again!!!!

They just pull out once u unbolt the fuel rail. I would buy new injector o rings just to be safe too.
 


Bill what do you mean that you merged the threads? Sorry I'm still new at this forum stuff. If I can't put this engine back together next week can I call you? I should be alright as I've done similar stuff before but never on a car newer than something built in the 70's. You know when everything was simple (except the confounded carbureator tuning!)
Bought the whole kit of O rings for the injectors just in case and I will only touch the ones on the bottom. Also got new coolant elbows and o rings just in case.
 
Well after two days work, yes two days! she's all back togather. I'm glad I changed LIM gaskets because they were toase. No water in oil amazing. Very clean car internally, no sludge or chocolate brownie inside the valve covers! I think I broke the vacuum hose that goes to the MAP which I'll replace or splice today. DuBob's video was great! Hopefully MIL will stay off now!:th_laugh-pointup:
 


Still have the code. I have sent the throttle body out for rebuild. It leaks from the side where linkage attaches to butterfly. Bad bushing? Hope this is it though......
 
Hmm that's weird. So your engine isn't affected by the lean up too now? That's good because I was worried. My code hasn't been back for 3 days but my ltfts are still out of wack.
 
Well I bought the car a couple weeks ago. It had the code already and I thought it would be simple...... The supercharger gasket was leaking also. Changed everything down to the LIM. I don't even know if this is going to fix the problem but I have to think if it doesn't I may need a fuel pump.
Are you familiar with the TB on this car? Has a coolant passage on the bottom. Each time I've removed the TB the gasket has been wet down there. I have to think that at some time this will cause a leak as well. Ever hear of this?
 
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