Engine Tech Help Needed

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Engine Tech Help Needed

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Blazer Forums >> Mechanical & Maintenance >> General Tech Help >> 1st Gen (1983-1994) Tech >> Engine Tech Help Needed

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Engine Tech Help Needed - 11/8/2004 6:14:47 PM

jp5162

Posts: 3
Joined: 11/8/2004
Status: offline

94 Blazer 4.3 vortec
120,000 - well maintained
Fuel injection assembly has been replaced

Starts hard at times and has a rough idle - almost like the motor is skipping

New plugs and rotor, spark plug wires only a couple years old

Fuel filter and fuel pump has recently been replaced

?? possible oxygen or map sensor - not sure - any suggestions

Lost - please help!!!

< Message edited by jp5162 -- 11/8/2004 6:15:43 PM >

Post #: 1

RE: Engine Tech Help Needed - 11/25/2004 3:37:00 AM

MeandMyChevy

Posts: 2
Joined: 11/25/2004
Status: offline

Try running some "Sea Foam" motor cleaner through it, it come sin a white and red can, about 5 bucks. I just through a can of it in my tank to try and clean my injectors out. I havent read one bad thing or heard one bad thing about and I researche dit for like 2 hours. i go tmine at Auto Zone. Try it out and if you follow the directions then it will clean every bit of anything thats bad out of your engine. Heres a detailed intruction link. http://members.nuvox.net/~on.roz/cars/z28/seafoam.html

(in reply to jp5162)

Post #: 2

RE: Engine Tech Help Needed - 11/27/2004 7:52:00 AM

jtroske

Posts: 2
Joined: 11/27/2004
Status: offline

IF YOU'RE RUNNING A VORTEC TRY CLEANING THE IAC OUT WITH CARB AND CHOKE CLEANER.IT MAY BE STICKING OPEN GIVING THE ENGINE TOO MUCH AIR AT IDLE

(in reply to jp5162)

Post #: 3