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Engine on Suburban 1993 is running square. Replaced spark plugs but still the same. What could it be?

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6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

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SOURCE: cannot start 1993 mazda miata

you may want to check your timing

Posted on Apr 19, 2009

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  • 24 Answers

SOURCE: 1993 Jeep Grand Cherokee engine problem

If the crank sensor (reaR at bellhousing) is dirty, will not start, clean up and visually inspect

Posted on Apr 29, 2009

  • 1 Answer

SOURCE: 2004 chevy suburban flex fuel misefire

Compression Test the Cylinders. We had one doing the same thing. It was a warped valve on #4.

Posted on Jun 30, 2009

  • 6982 Answers

SOURCE: running rough, spark plugs, distributor cap, rotor

First thing you need to know is which cylinders are missing. Then, don't forget there is an engine beneath the electronics. Do a quick test with a vacuum gauge and do a compression test. Check the distributor shaft for side play. If everything checks out good, then do electronic component testing. have a code check run (many parts stores do this free) and get a chiltons or haynes manual and follow test procedures in there.
I refrain from giving repair suggestions with problems like yours because people keep changing instead of testing parts. When I work on my vehicles or other peoples cars, I do testing to avoid buying expensive parts that most times won't correct the problem. At this point the most I'd suggest is to clean the mass air flow sensor wires with a Q-tip and carb cleaner...that often helps and is free. If you run into a problem with whatever you find, ask and I'll try to help.
good luck

Posted on Oct 05, 2009

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wracefans24
  • 1985 Answers

SOURCE: I have a 1993 nissan altima 2.4 liter engine. I

if the engine is not missing,and only idling rough,
you might want to check for vacuum leaks in hoses,or dirty injectors

Posted on Nov 21, 2009

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1 Answer

1993 7 suburban doesn't start wants to but it doesn't start all the way and it makes a funny noise


Hard to say anything about the 'funny noise'.

The engine needs fuel, air, and spark to start and run. If any of these are lacking then it won't.

I would first remove a spark plug from each side of the engine to see what MAY be going on. If the spark plugs are wet with fuel, then I would lean towards it being an ignition problem.

If they are dry, then it could possibly be a fuel problem.

You could also remove the distributor cap to see if there is corrosion on the terminals of the cap and rotor.

I had to rescue a GM vehicle a few years ago that quit running going down the road. The engine acted like it wanted to start but just wouldn't. I did the above suggested checks and it turned out to be the distributor cap and rotor were both corroded to the point of not allowing the spark to get to the spark plug wires. New cap and rotor and it started right up and has been running ever since.

Hope this helps.

May 29, 2015 | 1993 Chevrolet Suburban

1 Answer

1993 Chevy Suburban will not start and has no spark


Check all fuses under the hood. Test the coil with an ohmmeter. Check for battery voltage on the coil primary with key on.
If all good, suspect the crank position sensor. A bad sensor will cause no spark.

Nov 19, 2013 | 1993 Chevrolet Suburban

1 Answer

What tools will I need to change the spark plugs in a 93 GMC Suburban, and is it an easy job?


Tools needed to do a brake job are a hydraulic floor jack, stand jacks, metric and standard size sockets, box wrenches, etc., 6" C-clamp, oil catch pans, and vacuum pump/brake. bleeder------------------------------------------------------------------------------------



super vag k can v4.8

Dec 17, 2012 | 1993 GMC Suburban

1 Answer

I want to know how to change spark plugs in my 93 suburban


You will need a spark plug wrench and a spark plug gaper to make sure the plugs are gaped properly.

Dec 17, 2012 | 1993 GMC Suburban

1 Answer

How do i change a freeze plug on a 1993 chevy suburban 1500


They're all replaced the same way. bash in one side of the plug to turn it sideways in the hole. The freeze plug might be impossible to retrieve if it falls into the coolant passage — be careful.
Use a gripping device (pliers, ViseGrip, water-pump pliers, etc.) to get a hold on it, and wrench it out of the hole. Clean the hole thoroughly

coat the sealing surface of the new plug with Permatex No. 2 sealant, and drive the pug in squarely. Fins a pipe or socket that fits into the recess of the plug, and drive it in with that.

You need to do whatever is necessary to get square access to the plug. Sometimes that means removing cross members, sometimes that means removing steering parts, sometimes that means removing the engine.

An alternative is to get an expanding rubber replacement plug. To install those, all that is required is to be able to turn the nut in their center so as to get them to expand into the hole.

Jun 26, 2010 | 1993 Chevrolet Suburban

1 Answer

1999 Suburban, 5.7L loss of power then, it seems to run fine then loses power again. Now if you try to give throttle it knocks and pings and wants to die. Light throttle will make it go a little. I just...


Replace spark plug wires and plugs. Sometimes old wires will arc to the engine block, causing missfire. Check the wires at night with lights off and engine running, if they're bad, you'll defenitely see them arcing to the engine. if they are...replace.

Nov 30, 2009 | 1999 Chevrolet Suburban

1 Answer

1993 Jeep Grand Cherokee engine problem


If the crank sensor (reaR at bellhousing) is dirty, will not start, clean up and visually inspect

Apr 27, 2009 | 1993 Jeep Grand Cherokee

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