A couple of weeks ago I had the injectors of my diesel engine serviced with new nozzles, the result was increased power making the car feel like new.
However last night is seemed to be limping and completely lack lustre. I checked under the bonnet for any obvious fuel leaks, but there were none. Initially I thought I would have to contact the specialist garage as it is probably a result of their work.
Well this morning the car was back to normal, very strange I thought. However whilst doing about 35mph I revved the engine hard to the red limit while declutched and the engine immediately went into limp mode again. The injector light came on briefly for a couple of seconds. Shortly I stopped and after leaving the car for about 10 minutes, I restarted and the engine was fine. Well I tried revving it again as before, immediate limp mode.
The fuel filter was changed only 5,000 miles ago and all recent fuel has been from an Esso station. An injector cleaner was used a few weeks before they were serviced. Many years ago on a boat I remember a fuel starvation problem that was caused by some fibres that had entered the fuel and clumping together. In normal use the engine ran fine, but when a high fuel delivery was required the clump of fibres was sucked up the pipe to a union angle turn and reduced the flow. When fuel usage dropped so did the blockage and the engine returned to normal.
My supposition is it is fuel starvation, possibly similar to my example. Am I right in my diagnosis?
Is there anything I can do to check the fuel supply myself?
The car is a Fiat Marea Weekend 2.4 turbo diesel (not common rail) 1998 with 93,000 miles on the clock. The pressure test on the 5 cylinders was reading 350 compared to a when new reading of 400. The turbo boost was checked at the injector service and found to be working correctly.
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Roger
A fine is a tax for doing wrong. A tax is a fine for doing well.
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Since my post an hour ago I have tried bleeding each injector. I was surprised at how rough the engine sounded with one diesel feed line just slackened. Took the car for a test and initially seemed better then when driving at 30 mph (police car on my tail!) it went lumping and lacking in power. I decided to turn off onto a minor derestricted road to check the engine thoroughly. The lumpiness had stopped and I was able to revve freely through the gears to 4950 rpm (red line at 4500). On turning round I tried accelerating from different speeds and different gears, everything seemed fine. Then the engine went mildly lumpy so I parked for a few minutes and restarted to find everything running fine.
When I returned I decided to bleed the injectors again, but have not road tested it yet. May be it is air in the fuel lines and hopefully I have removed it. My next thing will be to bleed the fuel filter to check for water, but as this is a pig of a job due to its location this will have to wait to the weekend.
Any one any comments?
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Roger
A fine is a tax for doing wrong. A tax is a fine for doing well.
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