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Blown head gasket or intake manifold crack?


shoodabinacowboy

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Joined
Jul 8, 2021
Messages
2
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Location
Lititz, pa
Vehicle Year
1989
Vehicle
Ford Bronco II
Suspension Style
4wd
My credo
If it ain’t broke…and f Duralast
Hi I’m in Pa
1989 Ford Bronco II 2.9L v6 misfire and intake manifold gasket hole??

It’s a short video and u can’t see the smoke until the end when I’m blipping the throttle, but definitely not a head gasket…right??

any of you guys seen this before?

I get 280-350 F degrees at each cylinder (via exh manifold readings at ports w infrared temp gun). but on Cyl 4 (left front/driver’s side, furthest from firewall), I just get residual heat at about 165*…that, and it sounds like a miss and is rocking the motor so bad I need to check the mounts probably. Either way I’m not firing on all 6. #4 is a coNstant miss.

, Just did a full tune-up, didn’t fix problem, and I found the “leak” in the attached vide. I thought when I went remove #4 spark plug and it basically FELL out, that I’d be golden. But this scares me.

TIA for any help or advice y’all can provide!!!

Ford 4 life,
Greg
 
Last edited:


shoodabinacowboy

New member
Joined
Jul 8, 2021
Messages
2
Reaction score
0
Points
1
Location
Lititz, pa
Vehicle Year
1989
Vehicle
Ford Bronco II
Suspension Style
4wd
My credo
If it ain’t broke…and f Duralast
Hi I’m in Pa
1989 Ford Bronco II 2.9L v6 misfire and intake manifold gasket hole??

It’s a short video and u can’t see the smoke until the end when I’m blipping the throttle, but definitely not a head gasket…right??

any of you guys seen this before?

I get 280-350 F degrees at each cylinder (via exh manifold readings at ports w infrared temp gun). but on Cyl 4 (left front/driver’s side, furthest from firewall), I just get residual heat at about 165*…that, and it sounds like a miss and is rocking the motor so bad I need to check the mounts probably. Either way I’m not firing on all 6. #4 is a coNstant miss.

, Just did a full tune-up, didn’t fix problem, and I found the “leak” in the attached vide. I thought when I went remove #4 spark plug and it basically FELL out, that I’d be golden. But this scares me.

TIA for any help or advice y’all can provide!!!

Ford 4 life,
Greg
Bump?
 

JerryC

Active member
Joined
Apr 10, 2014
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Vehicle Year
1988
Vehicle
Ford
I can't tell where the smoke is coming from and all I hear is either the fan or power steering pump.
Did you do a compression check on that cylinder?
 

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