Engine characteristic worse after servicing
Discussion
Hi guys,
Just got my Cerb 4.2 back from 12k miles service.
Apparently tappets didnt require adjustment so at the end of the day the car mainly got fluids changed, new filters and new spark plugs. My mechanic also said he slightly adjusted valve timing.
Unfortunately the engine now runs worse at low revs in combination with strong acceleration. There is a stronger hesitation now (also between 2k and 3k revs) than before where this only occurred below 2k revs which I understand is normal for that engine. There is no issue when idling, normal driving, modest acceleration or strong acceleration at revs above 3k, just at strong acceleration from lower revs.
Workshop is about 300 miles away so I am trying to fix the issue without driving all the way back. Mechanic said on the phone that the engine was running fine when he test drove after putting everything back together. He reckoned that one of the spark plug sockets may have disconnected and would have to be put back on but they seem to be all fine (difficult to grab without taking air boxes out).
Before dismantling the whole lot... Any thoughts what the problem could be?
Cheers, Leo
Just got my Cerb 4.2 back from 12k miles service.
Apparently tappets didnt require adjustment so at the end of the day the car mainly got fluids changed, new filters and new spark plugs. My mechanic also said he slightly adjusted valve timing.
Unfortunately the engine now runs worse at low revs in combination with strong acceleration. There is a stronger hesitation now (also between 2k and 3k revs) than before where this only occurred below 2k revs which I understand is normal for that engine. There is no issue when idling, normal driving, modest acceleration or strong acceleration at revs above 3k, just at strong acceleration from lower revs.
Workshop is about 300 miles away so I am trying to fix the issue without driving all the way back. Mechanic said on the phone that the engine was running fine when he test drove after putting everything back together. He reckoned that one of the spark plug sockets may have disconnected and would have to be put back on but they seem to be all fine (difficult to grab without taking air boxes out).
Before dismantling the whole lot... Any thoughts what the problem could be?
Cheers, Leo
Air boxes wont come off as easily... Seem to be glued on or something. I had already unbolted them before writing this post. I dont want to make things worse without even knowing whether I should try something else first. Hence my question.
Ukkid: I have had this car for 5 years and have survived without being a mechanic and without having deep pockets.
I am just clever enough to ask when I am not sure what to do next. Guess this is what this forum is for...
Leo
Ukkid: I have had this car for 5 years and have survived without being a mechanic and without having deep pockets.
I am just clever enough to ask when I am not sure what to do next. Guess this is what this forum is for...
Leo
True, and I would be happy to hear more people's thoughs on this. According to my mechanic it is not unusual for AJPs driven on the road (not on the track) and without excessive high revving to not require tappet adjustment. However in the forum I have never heard of someone saying that adjustment wasn't necesary when the car was in for 12k miles service.
leo
leo
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