starts hard when cold on 1998 Chevrolet Blazer

no problem when started

by in Park City, UT on December 04, 2013
1 answer 1 comment
ANSWER by on December 04, 2013
Weak fuel pumps are common, you must have at least 55 psi to get the engine to start, 54psi won't open the poppets in the injectors. But with any no-start testing must be done, do you have spark when it won't fire? Are there any codes?
COMMENT by on December 05, 2013
Thanks. Had fuel pump checked. Low pressure. Needs to be replaced.
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