Question about 1995 Chevrolet Blazer

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95 blazer new egr valve still runs ruogh sensor says piston miss fire, what should i change. ran great one day next morn ran rough as soon as turned on.

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Ok you have the most annoying problem there is with those trucks. Either a bad Pressure regulator or a bad fuel line. Take the 2 torx screws out of the cover on the top of the motor and then remove the 10MM bolts that hold the intake together. Check and see on what side of the motor inside the intake is clean. If it is on the fuel line side then it is the lines if it is on the regulator side then it is the regulator. The regulator is about $40 and the plastic lines can be replaced with rubber lines for about $5. Make sure to put hose clamps on the new lines as the old plastic lines didnt have them.

Posted on Dec 31, 2010


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RPM Northwest

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