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Old 11-02-2008, 09:55 PM
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wtm442 wtm442 is offline
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Join Date: Aug 2004
Location: Squantum (part of Quincy), MA
Cobra Make, Engine: SPF1049 Titanium w/black stripes, 351W with Trick Flow Heads, Tremec 3550
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Quote:
Originally Posted by bly View Post
When driving it at a steady speed and roll into throttle slowly it seems to do better, but still craps out, when hitting it hard from a steady speed it seems to pull hard then nose over...
Check your accelerator pump lever. With engine off, and the pedal at WOT, you should be able to insert a 0.015 feeler gauge between the lever and the screw. Maybe you have way too much preload on the acc pump and you are bottoming it out and not getting a complete shot.

Another way to check is with engine off and throttle at idle position. Compress the acc pump override spring using a couple of wrenches until there is clearance (free play). Then back the screw off until all free play is removed.

Quote:
Originally Posted by bly View Post
If I stay in accelerator when crapping out it will clean up.
Could be caused by an over-rich (maybe) or a lean condition. When you are out for a ride, get the RPM's up over 3500 at a constant speed in 2nd or 3rd gear. Then stomp on the accelerator. At this RPM, the acc pump shot is all done. If there is no hesitation, the problem is in the acc pump area. If you still have the same "crapping out", it might be the power valve or something else that has been mentioned.
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