guineafowl21
Well-Known Member
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Now and again it will start, falter, stall, and then take a good 10 seconds of cranking to get it going, and a puff of whitish smoke comes out the back. It happens in winter, summer, dry days, wet days, and with both supermarket and decent fuel. Most of the time it starts straight away. MPG is very good.
Not too serious, I admit, but it’s annoying. So I did a leakback test (just after a failed start), and would be interested in your interpretation of the results:
TEST 1. Prime only: No diesel, except for a litlle droplet up the pipe of injector 2.
TEST 2. Cranking (injectors unplugged): all creeping up the pipe at the same rate; inj 2 slightly ahead.
TEST 3. 5 minutes of idle: 6.25, 6.5, 5.5, 5.5 ml.
Looks good. The only thing I noticed was that, between tests 2 and 3, while the pump was priming only, there was some diesel creeping up the pipe from inj 2. Almost as if the cranking had stuck its valve open a little bit.
Looks like inj 2 is a bit sticky. Perhaps an injector cleaner would sort it, or even a dose of 2-stroke.
Not too serious, I admit, but it’s annoying. So I did a leakback test (just after a failed start), and would be interested in your interpretation of the results:
TEST 1. Prime only: No diesel, except for a litlle droplet up the pipe of injector 2.
TEST 2. Cranking (injectors unplugged): all creeping up the pipe at the same rate; inj 2 slightly ahead.
TEST 3. 5 minutes of idle: 6.25, 6.5, 5.5, 5.5 ml.
Looks good. The only thing I noticed was that, between tests 2 and 3, while the pump was priming only, there was some diesel creeping up the pipe from inj 2. Almost as if the cranking had stuck its valve open a little bit.
Looks like inj 2 is a bit sticky. Perhaps an injector cleaner would sort it, or even a dose of 2-stroke.
