Compression issues
She was purring like the cat she is, a 2000 XJ8 and then just stalled. Trying to restart her didn't work and it had an unusual sound while cranking.
I had been worried about the timing chain tensioners and thought I would take a peek and so removed the cam covers to reveal tensioners that were breaking up. So I gathered all the tools and all the recommended parts, [thanks again to blackonyx of this forum], and went about replacing chains and tensioners, water pump etc. Have not been able to get her started yet. Thought about bore wash and tried a couple of times to add a teaspoon of oil to the cylinders and was rewarded with a more familiar sound as well as some firing as if it at least wanted to start. I went ahead and tested fuel pressure and got 38lbs. Today I performed a compression test and these are my results: Passenger side back to front- dry80 wet135 dry75 wet135 dry60 wet120 and dry80 wet150 Drivers side back to front- dry50 wet125 dry60 wet80 dry90 wet125 and dry60 wet95 I'm thinking of doing a leak down test next but it already seems likely I may have valve issues on drivers bank. This all began as the post " Closing after surgery " so its been a while. Haven't lost my mind just yet but would welcome a steady hand. |
When the car stalled originally did you have any codes? You might have had other problems besides the tensioners. I think even with the compression readings you have it should start. I made the mistake on my rebuild by putting left side cams on the right side head. I had zero compression on that entire bank. It did start but of course it ran like Crap until I undid my mistake.
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Codes, but of course. There were many
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Originally Posted by BobRoy
(Post 1545941)
When the car stalled originally did you have any codes? You might have had other problems besides the tensioners. I think even with the compression readings you have it should start. I made the mistake on my rebuild by putting left side cams on the right side head. I had zero compression on that entire bank. It did start but of course it ran like Crap until I undid my mistake.
Fuel system stat bank1 bank2 Cal not ready Calculated load 34.90 % st fuel trim B1- 0.00% lt fuel trim B1- 0.00% st fuel trim B2- 0.00% Cal misfire detected P303 cyl 3 P306 cyl 6 P0307 P1316 undefined code P0327 knock sensor 1 circut Low input bank 1 P332 knock sensor 2 circuit Low input bank 2 |
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