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Intake manifold backfire

Tiny
HONDACAINE
  • MEMBER
  • 1992 HONDA ACCORD
  • 2.2L
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 140,000 MILES
Car ran for fifteen minutes after it sat for three months. Stalled at a sign and would not start back up. Now it backfires through the intake manifold. Cranks fine but catches on every fourth compression cycle. The compression is weirdly high, 175 psi on my gauge. Any thoughts?
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Tuesday, October 30th, 2018 AT 4:20 PM

9 Replies

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Good evening.

Is the compression the same on all four cylinders?

Backfiring comes from spark at the wrong time. Did you remove the cap and rotor and inspect for carbon tracking in the cap?

Also, make sure the plugs and wires are in good shape and not leaking electric anywhere but to the plugs.

Roy

https://www.2carpros.com/articles/engine-backfires-while-running
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Tuesday, October 30th, 2018 AT 4:28 PM
Tiny
HONDACAINE
  • MEMBER
  • 5 POSTS
The compression was 175 for all four cylinders. All the contacts looked clean when I took it apart, and the wires are fairly new. I just bought the car for my girlfriend. It has a light oil leak as I saw oil on the plugs when I cleaned them. Thanks for the fast response.
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Tuesday, October 30th, 2018 AT 4:35 PM
Tiny
ASEMASTER6371
  • MECHANIC
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Okay, look closer inside the cap for a black line connecting the copper leads. Common issue for back fires.

Also, a broken valve spring will do this as well.

Roy
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Tuesday, October 30th, 2018 AT 4:37 PM
Tiny
HONDACAINE
  • MEMBER
  • 5 POSTS
I will look tomorrow since it is dark now. Thanks for the advice.
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Tuesday, October 30th, 2018 AT 4:47 PM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
You are welcome.

Always glad to help.
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Tuesday, October 30th, 2018 AT 5:42 PM
Tiny
HONDACAINE
  • MEMBER
  • 5 POSTS
Replaced the distributor, runs rough for a few seconds and stalls. After a few tries I revved it to 2,500 rpm's before it choked out.
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Friday, November 2nd, 2018 AT 5:31 PM
Tiny
ASEMASTER6371
  • MECHANIC
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Why did you replace the distributor?

Did you have this issue prior to the replacement?

Roy
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Friday, November 2nd, 2018 AT 7:23 PM
Tiny
HONDACAINE
  • MEMBER
  • 5 POSTS
Friend had one handy. And before the new one it did not run at all.
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Friday, November 2nd, 2018 AT 7:25 PM
Tiny
ASEMASTER6371
  • MECHANIC
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Okay, it sounds like a used distributor. The fact that you can only install it one way tells me that may be the issue.

I would get a rebuilt one and start from there.

Roy
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Saturday, November 3rd, 2018 AT 3:32 PM

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