Question about 1998 Chevrolet Blazer

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98 blazer sudden je rk when starting.

98 chevy blazer 4dr vortek4.3L. When I start it the engine makes a sudden **** like one of the chambers has alot of gas in it causing a bigger combustion then the others. The fuel pressure is fine when running but bleeds off after it is shut down and I suspect one of the injectors is dumping fuel into a chamber causing the **** when starting. It only does it when the car has been off for over an hour. If I shut it off to get gas then turn it back on 5 min later it starts fine. there is no rough idle and the car runs great no check engine light no fuel smell, replaced the fuel pressure regulator 2 months ago and cleaned the tips of the injectors but didn't help

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Posted on Jan 02, 2017

  • 7 Answers

SOURCE: Doesn't start only turns over

you also need to make sure the tps is not over 2.5 volts

Posted on May 24, 2008

  • 79 Answers

SOURCE: why does the combustion chamber get to much fuel,

Check the MAP sensor. Check for vacuum leaks.

Posted on Apr 25, 2009

  • 1486 Answers

SOURCE: 1987 chevy S10 engine idle problem

relace the throtle air idle valve.The temp switch will allso cause this problem.

Posted on Jul 19, 2009

  • 7 Answers

SOURCE: 1993 Chevy S10 Blazer engine hesitation with smoke from exhaust

Had a 94 Olds Bravada that did a similar thing and it was EGR valve on the front of the intake. It' s easy to take off and clean with WD 40 and if you have an air compressor blow it out good.

Posted on Jan 24, 2010

  • 1565 Answers

SOURCE: i have no combustion in the number 6 chamber and

your fuel injector is not working correctly, or you have poor compression on that cylinder.

Try tapping the fuel injector while the engine is running. it may dislodge a clog if present. This will not help, however, if the coil inside the injector is broken.

Posted on Sep 18, 2011

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