Hi there my td5 after driving for 10 mins or so develops a misfire ! but if i switch off then back on its fine for a while again ! its showing no engine faults on the diagnostic ! any ideas would be appreciated
the oil is from inside the rocker cover, it travels down the injector loom due to poor seals and reaches the ecu, where it corrupts the signals from the ecu, causing allsorts of running issues
Also, there's a multiplug where the wiring loom goes inside the cylinder head, on the driver's side front. Unplug it and leave the bit attached to the engine loom pointing downwards to drain for a while and then give it a clean with something - I used carb cleaner. The oil causes shorting between the pins here which doesn't exactly help the performance.
thanks guys i totally get it now ! i had this 90 for 4 years now other than general servicing never had any probs at all even though its done 170 + k . i ordered the new loom should be here today! the misfire is getting worse starting after about 2 mins driving & dont clear now when turned off then on. lets see what happens
With the new loom fitted, still keep checking the red plug for a couple of weeks as it can still get some oil from oil that has already worked its way up.