Question about 1995 Chevrolet Blazer

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How to manually get a trouble code out of a 95 blazer with vortec

No one has the right tester, only the dealer. it does not communicate with the vortec type fuel injected. engine shake so bad only at idle but runs smoothly at increased throttle. also there is such a strong terrible smell of fuel inside the vehicle, and there is no sign of fuel leaking.
best regards
eddy

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  • Charlie2112 Jan 26, 2009

    I have a similar problem, mine idles fine but when I push the throtle past 50% it acts like it dosent have enough feul. Can the spider assembily cause this also?

  • Jay Workman
    Jay Workman Oct 09, 2014

    Charlie, you may have a weak fuel pump - have the pressure checked by a mechanic . eddy, the spider is the rule in 90% of the idle problems in 95 vortex engines, but do not overlook the possibility of a hairline split in the CMFI fuel return lines. My mechanic says almost all inlectin/carburation system failures are linked to ethanol gas eating lines and gaskets.

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Rough idle does indicate a fuel leak inside the intake plenum. The common cause is a leaking fuel pressure regulator, but could also be a bad fuel injector or a leaking fuel intake line. When you remove the plenum, look for a fuel washed area that is cleaner in appearance than the rest of the intake area. If it is cleaner near the passenger side fuel pressure regulator, replace the regulator. If it is cleaner on the driver side, it could mean a injector or fuel inlet/outlet line is the problem. In this case, it is best to replace the whole spider assembly which includes the injector, regulator, and poppet lines. I would go the extra mile and replace the fuel inlet/outlet lines as well since they are probably brittle and could crack or split in the movement required to replace the spider assembly. I have two 95s and replaced the spiders in both.

Posted on Feb 11, 2015

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The vortec motor has been known for the so caller spider assembly which is the fuel injection set up inside the intake manifold going bad.The regulator starts leaking wich puts extra fuel into the motor.If that is it you should change the whole assembly.

Posted on Nov 30, 2008

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