Hi,
2005 2.2l 4 cylinder 311CDI Uk.
I get an occasional cough when driving like I'm getting the odd bad firing in a cylinder. This happens most often when I'm sitting at a steady speed and then need to put my foot down a bit to go up a hill or overtake. Sometimes it stalls it. When it happens the temp guage jumps up a bunch and goes down just as fast.
The van had a bad case of the black death so I've resealed all the injectors, had one new (fluffed the extraction of one and broke it). Did all the filters, oil, air, cabin air, and fuel at the same time. Happy to say all the injectors seem well sealed and dry after 2000 miles. The problem started about 1000 miles ago.
I thought "this must be an injector" so I did a leak-off test (see the picture). I had only short lengths of tube (about 5 inches) so I only ran the engine for under 10 seconds for the three old (probably really old) injectors to fill their tubes. The new one (refurbed, on the left in the picture) had dramatically less fill. I did it a couple of times to check I hadn't done anything stupid like make a bad connection with the tube..
While I did the leakoff test I noticed some air bubbles in the fuel pipe going to the fuel rail. Theres also a big bubble sitting at the top of fuel filter. See pic:
So my questions are:
-How do I bleed these bubbles out of the fuel system?
-What do you think of the results of the leakoff test?
Thanks a bunch!!!
2005 2.2l 4 cylinder 311CDI Uk.
I get an occasional cough when driving like I'm getting the odd bad firing in a cylinder. This happens most often when I'm sitting at a steady speed and then need to put my foot down a bit to go up a hill or overtake. Sometimes it stalls it. When it happens the temp guage jumps up a bunch and goes down just as fast.
The van had a bad case of the black death so I've resealed all the injectors, had one new (fluffed the extraction of one and broke it). Did all the filters, oil, air, cabin air, and fuel at the same time. Happy to say all the injectors seem well sealed and dry after 2000 miles. The problem started about 1000 miles ago.
I thought "this must be an injector" so I did a leak-off test (see the picture). I had only short lengths of tube (about 5 inches) so I only ran the engine for under 10 seconds for the three old (probably really old) injectors to fill their tubes. The new one (refurbed, on the left in the picture) had dramatically less fill. I did it a couple of times to check I hadn't done anything stupid like make a bad connection with the tube..
While I did the leakoff test I noticed some air bubbles in the fuel pipe going to the fuel rail. Theres also a big bubble sitting at the top of fuel filter. See pic:
So my questions are:
-How do I bleed these bubbles out of the fuel system?
-What do you think of the results of the leakoff test?
Thanks a bunch!!!
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