Question about 1994 Chevrolet S-10 Blazer

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94 Chevy s10 lopes @ idle

Replaced all filters, checked all vacuum lines, found broken spark plug wire and burned out plug, replaced them, & problem went away for 2 days but its back, next step I guess is cap & rotor?

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  • Chevrolet Master
  • 6,982 Answers

Cap, rotor and set of wires would be a good start. Why not add a set of good plugs while working. Then you've got a good basic tune up! Then, if you still have a problem at least you have a good baseline to work from!

Posted on Mar 11, 2009

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Posted on Jan 02, 2017

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2 Answers

Motor shakes very bad


-Sounds like blow head gasket, broken or burn valve.
-Do compression check each cylinder to see what you have and compare to its specification.
Or
-Was it recently rebuild?
If so then timing might be off.
spark plug wire connect to the wrong spark plug.
Vacuum line might connect to the wrong line.
Bad rotor or cap .

Good luck

Mai

Nov 27, 2017 | 2000 Ford Mustang

1 Answer

My jeep wont stay on but i have to give it gas to turn it on


replace spark plugs wires,problem could be ignition timing,idle speed too low.intake manifold vacuum leak,check all vacuum lines on intake check pcv valve make sure its getting vacuum and the vacuum line not disconnected or cracked broken if pcv is not working engine wont run correctly.

Oct 03, 2012 | 1988 Jeep Cherokee

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2001 ford taurus,lopes when first started,when cold.


intake manifoold leak check all vacuum lines replace all vacuum lines if look cracked ,spark plugs could be fouled out by leaking fuel injectors, clean fuel injectors,replace fuel filter,replace air filter,replace spark plugs and wires,do tune up see if it helps if not.could have leaking intake manifold gasket or leaking egr valve,use engine vacuum gauge check engine vacuum for intake manifold gasket leaks.

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94 s10 with 4.3 w, misfires during driving.


Check fuel pressure,fuel pump maybe on the way out.

Apr 19, 2010 | 1994 Chevrolet S-10

1 Answer

Engine lopes while idling or idles erratically


1.vacuum leak
2.leaking egr or plugged pcv valve
3.ignition components damp or damaged
4.faulty or incorrectly gapped spark plugs
5.faulty plug wires
6.faulty emmission components
7.air filtr clogged
8.leaking head gasket
9.timing chain or gears worn
first check air filter then check timing with a light make sure its steady if it bounces around the your chain/belt is needing replaced check your wires for frays or just replace them cause their 10 years old

Feb 09, 2009 | 2002 GMC Envoy

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