1993 Ford Explorer backfires

SKATER88

MEMBER
1993 FORD EXPLORER
6 CYL
4WD
AUTOMATIC
143,000 MILES

I had just got done putting in a rebuilt engine in that has about 30,000 miles on it and got new gaskets on everything, new spark plug and wires, and new hoses, and I went to start it up and its idling really rough and it keeps backfiring all I hear is this popping sound, I thought maybe if I took for a little test drive it would go away but then the car just ended up stalling what could be the problem?

6 Replies

JIM SHIRRON

MECHANIC
77 POSTS

Check your spark plug wires. It might be as simple as two wires crossed

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Wednesday, August 18th, 2010 AT 5:15 AM

SKATER88

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4 POSTS

There in the right spots, is there anything else that would cause it?

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Wednesday, August 18th, 2010 AT 5:17 AM

JIM SHIRRON

MECHANIC
77 POSTS

Be sure your wires are in the right order on the cap and the plugs. Check your timing using a timing light.

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+1

Wednesday, August 18th, 2010 AT 5:24 AM

SKATER88

MEMBER
4 POSTS

How do you use a timing light?

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Wednesday, August 18th, 2010 AT 5:25 AM

JIM SHIRRON

MECHANIC
77 POSTS

You don't have a timing light? Try loosening and twisting the dist. VERY slightly one direction, then the other. Scratch a mark on the dist. And the intake manifold before you do so you can put it back exactly where it was if this doesen't help. If you notice a difference twisting the dist either direction, clamp it down tight and test drive.