You can either loosen each injector line one at a time while the engine is running to listen for a drop in RPM, or you can use a voltmeter set to millivolts to probe the GP spades (with the GP leads disconnected) to see if they're putting out any voltage. It would be in the 0.5-5.0 millivolt range usually, and all GPs should read relatively even. If you have a reading that is way off, you can swap that glow plug with one from one of the 'normal' cylinders and retest it. If the abnormal reading moves with the GP, you have a bad GP, but if it stays with the cylinder then there is something wrong with the injector in that hole. This test is done once the engine is fully warmed (so it'll start w/o GP harness connected).
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1986 F250 2WD Super Cab XLT Lariat w/ 1996 front clip. Dually bed & van rearend (2" wider, allows spring clearance). 6.9 w/ approx 120,000mi. Banks non-wastegated turbo system, Beru ZD1A glowplugs, Delphi BB injectors, Kenworth pyrometer, vac/boost gauge, electric water temp/oil psi/voltmeter mounted in dash. 3" Mandrel-bent open exhaust. C6 trans, 3.54 gears. Okiegringo idler pulley. R134a A/C conversion. WMO/diesel blend in one tank.
If you go to the gallery and search for members photos and look for CDNSARGUY..he has an extensive set of pictures and instructions for our trucks. very good information
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1994 F-350 7.3 IDI Turbo, crew cab, E4OD, LB, Dually,
ATS Turbo upgrades: 3" DP with 3" exhaust Magnaflow XL muffler: Pictures Here
1997 Jayco fifth wheel 323 RKS, Robins 16K dual axis hitch
Apillar pod with: Autometer C2 Series gauges: pyro,trans, boost
Hypermax Cowl induction, Flex-A-Lite 26K tranny cooler w/fan
K&N air filter (we'll see in a million miles)
Tekonsha "prodigy" brake control
Train Horns: Pictures here
A multimeter with a millivolt scale will do fine. There's no specific RPM you're looking for, you're just listening for a change. The RPM should drop when you loosen the line going to a good injector.
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1986 F250 2WD Super Cab XLT Lariat w/ 1996 front clip. Dually bed & van rearend (2" wider, allows spring clearance). 6.9 w/ approx 120,000mi. Banks non-wastegated turbo system, Beru ZD1A glowplugs, Delphi BB injectors, Kenworth pyrometer, vac/boost gauge, electric water temp/oil psi/voltmeter mounted in dash. 3" Mandrel-bent open exhaust. C6 trans, 3.54 gears. Okiegringo idler pulley. R134a A/C conversion. WMO/diesel blend in one tank.
The best way to know if your injectors are firing evenly, is to yank them out have have them pop tested. You can make you own tester or take them to a shop and they usually will just do it free or for a very small amount.
I found a VW forum that someone has a picture and a whole writeup using a cheap bottle jack and lots of other odds and ends to make a home made tester.
__________________ My Rigs: 86' F-250 XLT Lariat,6.9 Diesel, Extended Cab, 4x4, 4.10's, 8'bed, Push Button Glowplugs, etc...My Truck,My Truck At Christmas,My Album
99' Crown Vic Police Interceptor (P71) w/Steet apperance package, 4.6L, 4R70W, 3.55 Trac-Loc Differential (DK), Total Cloth Interior, New Honeycomb Grill, Black PI Trunk Bezel, Silverstars, 110K,My 99' CVPI Photos
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