1988 BMW 325 #4 fuel injector keeps fouling

1988 BMW 325
300,000 MILES • 6 CYL • 2WD • MANUAL
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JULIUSZ
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1988 325is BMW
300k on clock.
blew head gasket, had it replaced.

now injector #4 keeps getting clogged.
spark good, signal seems ok, plug has no gas, bit of oil.
replaced injector and all fine for a week or so... till a longer trip and injector fouled the next morning. Happened 3 times.
compression test reads 165 on all 6.
took apart all conectors and cleaned and lubed... but injectors fire in 2 groups of 3, and no other injectors seem to be having any difficulty.
Have had car for last 10 years with no injector troubles at all till now.

coolant loss also might be related?
Oct 30, 2009 at 10:01 PM
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