This is topic ???CAR FALLS ON ITS FACE FROM DEAD STOP??? in forum Tech Talk at Northern California Ford Owners  .


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Posted by totalkaos92 (Member # 5750) on :
 
Put a bone stock motor in my coupe, minus a cobra intake, and aftermarket fuel regulator.


Motor ran perfect in cousins car, and all i did was remove all the smog equipment, and water lines on lower intake.


But the problem im having is when i come from a deadstop the car starves for gas(just loses power, and stalls) until i rev the engine and builds the power back up, then it hauls ass?

The car has a fucked up idel too. Changed the sensors, and it made no diffrence.

Changed fuel filter, and fuel pressure is set at 35PSI.


any help please?
 

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Posted by Blind (Member # 3052) on :
 
vacuum leak, find it and fix it
 

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Posted by BlowN67 (Member # 4229) on :
 
bet u have a vacum leak under the intake somewhere. or anywhere before the throttle body check all couplings.
 

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Posted by totalkaos92 (Member # 5750) on :
 
will look over it again, but i have been over the motor a million times lol

will look some more.
 

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Posted by 92_5.0 (Member # 7624) on :
 
might wanna check the IAC also, just clean it with some carb cleaner, wouldnt hurt

good luck
 

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Posted by 92_5.0 (Member # 7624) on :
 
you can also spray carb cleaner all around the engine while its running to help find the vacuum leak (oldest trick in the book lol)
 

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Posted by racerx7 (Member # 3370) on :
 

quote:

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Originally posted by Blind:
vacuum leak, find it and fix it

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quote:

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Originally posted by 92_5.0:
you can also spray carb cleaner all around the engine while its running to help find the vacuum leak (oldest trick in the book lol)

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+10 Spray around the upper to lower intake gasket.. check all the vaccum lines to make sure they are connected. Check the clamps that hold the intake tubing on.. etc.
 

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Posted by dpracingdan (Member # 5778) on :
 
Also might wanna check Fuel pump Relay under drivers seat. Yeah, it'll still run with a bad relay. Took me a week to track down and diagnose a shitty running motor in my car, and it still had 40psi at the fuel rail. The pump just wasnt sustaining 40 psi when tyring to rev up- and we eventually tracked it down to that damn relay.
 

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Posted by totalkaos92 (Member # 5750) on :
 

quote:

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Originally posted by dpracingdan:
Also might wanna check Fuel pump Relay under drivers seat. Yeah, it'll still run with a bad relay. Took me a week to track down and diagnose a shitty running motor in my car, and it still had 40psi at the fuel rail. The pump just wasnt sustaining 40 psi when tyring to rev up- and we eventually tracked it down to that damn relay.

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THANKS DAN, GOTTA TRY THAT. CAUSE I SWEAR I HAVE BEEN CHECKING MY VACCUME LINES FOR A WHILE NOW

AND THANKS GUYS
 

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Posted by totalkaos92 (Member # 5750) on :
 
THE REASON I DONT THINK ITS A VACCUME IS BECAUSE I CAN GET IN THE CAR AND THE PROBLEM WILL START, THEN OUT OF NO WHERE IT GOES AWAY, AND IM A BAT OUTTA HELL , THEN I SHUT THE CAR OFF AND WHEN I DRIVE IT AGAIN THE PROBLEMS BACK .

THAT BAD RELAY SOUNDS RIGHT
 

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Posted by fandango (Member # 8392) on :
 
ignition switch maybe? fuel filter maybe?
 

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Posted by street_illegal_stang (Member # 1554) on :
 
run codes!

[ May 14, 2008, 03:39 PM: Message edited by: street_illegal_stang ]
 

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Posted by turbo50 (Member # 6700) on :
 

quote:

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Originally posted by totalkaos92:
and water lines on lower intake.

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When you say water lines, do you mean the hard water lines or just the little 5/16 t/b lines?

If so then what did you do with the ECT??


 

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Posted by totalkaos92 (Member # 5750) on :
 

quote:

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Originally posted by turbo50:

quote:

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Originally posted by totalkaos92:
and water lines on lower intake.

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When you say water lines, do you mean the hard water lines or just the little 5/16 t/b lines?

If so then what did you do with the ECT??

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