Have to prime throttle body to start


Old 11-10-07, 07:42 AM
Thread Starter
Join Date: Nov 2007
Posts: 1
Have to prime throttle body to start

I have a 1987 Chevy Blazer V-8. Put in a new fuel pump and gas regulator and the truck still won't start. I can prime the throttle body and it will start and run, shut truck off, won't start until I prime it again. Can anyone help?
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Old 11-10-07, 06:08 PM
Join Date: May 2006
Location: Iowa!!!!!
Posts: 3,672
Assuming you are getting pressure to the central point injectors, it only leaves the injector signal or a vacuum leak. How are the idle rpms after it gets warmed up? If they're normal, that leaves the cold start signal to the injectors. A chance it's a computer problem.

I would get codes pulled to see if anything shows up. Meanwhile maybe some of the Chevy guys here will jump on this thing.

Hope this helps,


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