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bad cylinder
- Thread starter P Wilson
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88vert
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- 94 unlimited
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- '18 XLT
Unless you have a cracked block, running onf 5 cylinders doesn't necessarily mean you need a new engine. What was the actual diagnosis?
P Wilson
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- 91 xlt
possible bad cylinder??
I started with a small mis at redlights - almost not enough to notice- a week later it was worse every day--$312.00 ago I got a complete tune up-new wires plugs fuel filter etc...on my 91 xlt -exactly 60 days later the engine started missing terriblyagain. A friend of mine pulled the plugs and only one of them was oil saturated and cracked - I took it to the shop today to have a compression test . Results in the morning. Good luck... I hope I dont have to replace the engine. It only has 80,000 miles on it and ran excellent up to this point.
I started with a small mis at redlights - almost not enough to notice- a week later it was worse every day--$312.00 ago I got a complete tune up-new wires plugs fuel filter etc...on my 91 xlt -exactly 60 days later the engine started missing terriblyagain. A friend of mine pulled the plugs and only one of them was oil saturated and cracked - I took it to the shop today to have a compression test . Results in the morning. Good luck... I hope I dont have to replace the engine. It only has 80,000 miles on it and ran excellent up to this point.
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- 1992 XLT 4x4
Since you have a '91 and most likely still have the factory heads, you most likely have a bad head or head gasket.
It is a somewhat common issue. They redid the heads in '93 (you can use 93 heads... it will say 93tm on it) to best less prone to cracking (they dont' like hot motors).
When they do the compression test, see if they can (if they dont' already) drop a little on in the cylinder, then test it again.. If the compression doesn't come up then you either have a hole in the piston (not likely) or the problem is from the head gasket and up (gasket/heads etc).
The heads can be changes in about 12 hours (doing it at home).. I think "book time" was 10 hours. Rebuilt heads will run about $550 or so... depending on what condition your old heads are in. If your old ones are cracked between the valves, you wont' get anything for the core. If it is cracked in the water jacket etc you still get some money for the core.
Thats a heck of a lot cheaper (and doable if you have basic hand tools and a torque wrench) and a haynes/chiltons book then replacing the motor.
~Mark
It is a somewhat common issue. They redid the heads in '93 (you can use 93 heads... it will say 93tm on it) to best less prone to cracking (they dont' like hot motors).
When they do the compression test, see if they can (if they dont' already) drop a little on in the cylinder, then test it again.. If the compression doesn't come up then you either have a hole in the piston (not likely) or the problem is from the head gasket and up (gasket/heads etc).
The heads can be changes in about 12 hours (doing it at home).. I think "book time" was 10 hours. Rebuilt heads will run about $550 or so... depending on what condition your old heads are in. If your old ones are cracked between the valves, you wont' get anything for the core. If it is cracked in the water jacket etc you still get some money for the core.
Thats a heck of a lot cheaper (and doable if you have basic hand tools and a torque wrench) and a haynes/chiltons book then replacing the motor.
~Mark
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