glowing manifold
10-15-2010, 10:00 PM
#1
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Year: 1996
Model: Cherokee
Engine: 4.0 HO
glowing manifold
sometimes my jeep sputters and sounds like its missing, then i noticed that the manifold is glowing red hot..any suggestions
10-15-2010, 10:08 PM
#2
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Year: 91 Limited
Model: Cherokee
I am not 100% but is a sign you are running lean. Can/have you check your timing, air/fuel ratio?
Last edited by Destination XJ; 10-15-2010 at 10:18 PM.
Hope someone more knowledgeable chimes in! 
10-15-2010, 10:25 PM
#6
Verify the fuel pressure and look for vacuum leaks.
You can rent a fuel pressure gauge at most any auto parts store. The valve is on the fuel rail.
Grab a can of WD-40 and spray it around where the intake manifold touches the head. If the engine bogs then you have a vacuum leak. Also check the vacuum lines.
Check engine light?
You can rent a fuel pressure gauge at most any auto parts store. The valve is on the fuel rail.
Grab a can of WD-40 and spray it around where the intake manifold touches the head. If the engine bogs then you have a vacuum leak. Also check the vacuum lines.
Check engine light?
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10-15-2010, 10:39 PM
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Year: 1996
Model: Cherokee
Engine: 4.0 HO
okay well there is a vacuum hose coming from on top of the valve cover the one in the front of the valve cover i took the hose off it and its just the plastic 90 degree hose
10-15-2010, 10:41 PM
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Year: 91 Limited
Model: Cherokee
This is where I leave the convo, because I dont own a jeep (yet) so Im not sure what should be there. Good luck tho! Sorry I wasnt much help.
10-15-2010, 10:51 PM
#12
There should be a vacuum diagram on the under side of the hood. It will show where the vacuum lines are located.
Edit: I should say dont worry about them as long as they are connected, oopsies.
10-15-2010, 11:06 PM
#13
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Year: 1999
Model: Cherokee
Engine: 4.0 High Output
Another problem of this could be a plugged cat. One of my friends had the same problem your having and found out the cat was plugged, if all else fails, check it out.
10-16-2010, 05:44 AM
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Year: 1989 xj sport 2dr
Model: Cherokee
Engine: 12 hole bosch Injectors
or the muffler is plugged or broken down in side start the truck have some rev it up make sure there is a increase in exhaust coming out of tailpipe with yuor hand
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