Compression Ignition Addict
Join Date: Jun 2008
Location: Silverton, OR
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IDI's dont have EBPV's. As far as air pump, are you refering to the vacuum pump? If its wooshing you would have decreased braking performance, I would think he would post something about that?
I crack the injector lines one at a time to see if a injector is making the noise. If you crack it and the engine starts to idle rough, and the noise is still there, its not that injector, and move on. I would also want to pull the valve covers and check all the rockers, might be a exhaust valve problem of some sort.
1985 Ford F-250 with a 6.9 IDI/T-19 4speed 4x4
Paint, Eagle Alloys, Kelly Safari TSR's, ATS turbo, gauges
2004 Jetta TDI 5 speed
2004 2wd Excursion Limited 6.0. Testing how loyal I am to Ford
1997 Passat B4V TDI. 1 of 80 imported in 97. 50 MPG and a factory 25 gallon fuel tank!