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1990 Chevrolet Blazer

 

Question: engine backfires when rev'd really high?

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bigd_92503, 5.7L V8, Riverside, CA, December 01, 2010, 07:43
 Rookie

hello,
The vehicle is a carburated chevy 350 K5 Blazer
Starts and seems to idle fine, It is set to 8 deg. BTDC. When you first start to rev it up it acts ok. When you rev it higher or get on the accelerator it stumbles and there is some backfire. What causes this? And what should i be checking for?

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  • Answer #1

    mastertech6371 December 01, 2010, 07:49
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     Master

    check the distributor cap for a crack. common issue.

    Roy

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    bigd_92503, December 01, 2010, 08:21
     Rookie

    All inspections done with the naked eye, Indicate that the Distr. Cap appears to be fine

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