LT1-LT4 Modifications 1993-97 Gen II Small Block V8

opti or sensor or fuelpump

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Old Oct 25, 2007 | 09:56 AM
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Default opti or sensor or fuelpump

I just installed a walboro fuel pump and dont know if it can be the cause of my problem that i have been having. It seems to be like the car takes about 5 seconds to start when it cold but when it warmed up and u try to start it again it fires up instantly. But thats not all my problems the next thing is that when i drive the car for a bout 15-20 minutes it sputters like if there is no gas and shuts of and like 20 minutes later it fires up good and u can drive it again. I also get a shake like a miss I have not did a tuneup since i have had the car and that is about 2 years 15,000 miles give or take. I wanted to do that but was thinking about changing the opti at the same time but dont want to spend the money if i dont have to so if there is a way to test the opti to see if it is working correctly let me know.
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Old Oct 25, 2007 | 10:08 AM
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Did it start after the install? Did it happen at all before the install?
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Old Oct 25, 2007 | 10:14 AM
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You may have a gas tank vent problem that has now manifested itself due to the increased flow from the Walbro. Try to loosen the gas tank cap and see if the problem reappears.
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Old Oct 25, 2007 | 10:19 AM
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Another thing i noticed is that there is a strong gas smell that can be smelt inside the car and when you are outside the car it is really strong. I Didnt have the problem with the startup issue but had the sputering issue before that .
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Old Oct 25, 2007 | 01:57 PM
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anyone has any input would apreciate it. thanks
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