Intake manifold gasket leak Mazda B3000

Tiny
ERICB3000
  • MEMBER
  • 2000 MAZDA B3000
  • 150,000 MILES
Rough idle shaking engine cylinder #4 misfire have has new spark plugs and wires new coil pack new EGR valve and used sea foam fuel injector cleaner
Sunday, December 25th, 2011 AT 6:58 AM

6 Replies

Tiny
ERICB3000
  • MEMBER
  • 3 POSTS
Think it is a bad gasket on intake manifold would that cause these problems
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Sunday, December 25th, 2011 AT 6:59 AM
Tiny
RIVERMIKERAT
  • MECHANIC
  • 6,110 POSTS
Yes, it could.
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Sunday, December 25th, 2011 AT 7:06 AM
Tiny
ERICB3000
  • MEMBER
  • 3 POSTS
I have tried spraying brake cleaner and wd-40 around the manifold and gasket and could not detect a leak but I know the gasket is broken in half
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Sunday, December 25th, 2011 AT 7:24 AM
Tiny
KHLOW2008
  • MECHANIC
  • 41,814 POSTS
If only one cylinder is misfiring, the possibility of a bad manifold gasket is not high, unless the leak is at the intake port of the cylinder.

Have you checked the compression?
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-1
Sunday, December 25th, 2011 AT 8:00 AM
Tiny
RIVERMIKERAT
  • MECHANIC
  • 6,110 POSTS
Hey KH, Happy Holiday, man.

The user said he knows the gasket is broken in half.

EricB: Gap properly set on the new plugs? Like my colleague said, a compression test would be a good idea.
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Sunday, December 25th, 2011 AT 8:11 AM
Tiny
KHLOW2008
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  • 41,814 POSTS
Merry Christmas, Mike.
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Sunday, December 25th, 2011 AT 4:47 PM

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