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Join Date: Apr 2004
Location: Salida, Ca
Posts: 59
testing for faulty injector

Im still trying to find the cause of my miss and hesitation. I've changed all ignition hardware wires included. To see if I have a bad injector, I purchased a laser thermometer and tested the heat coming off each header pipe. I found the # 1 to read about 100 degs higher than the others. The fluctuation is greater too. Could this be the bad injector? Has anyone else perform this test with successs? Thanks!
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79 Euro 930
Old 12-13-2007, 03:34 PM
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Join Date: Sep 2003
Location: Kirkland, WA
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Why screw around? Send them to:
www.witchhunter.com
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- Craig 3.4L, SC heads, 964 cams, B&B headers, K27 HF ZC turbo, Ruf IC. WUR & RPM switch, IA fuel head, Zork, G50/50 5 speed. 438 RWHP / 413 RWTQ -
"930 is the wild slut you sleep with who tries to kill you every time you "get it on" - Quote by Gabe
Movie: 930 on the dyno
Old 12-13-2007, 03:35 PM
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Location: Brooks, GA
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I tested mine exactly how you are describing. I sent all 6 to Marren Fuel Injection to trade them for 6 matched injectors. The temps between the cylinders closed up to 25 degrees difference at idle.
Old 12-13-2007, 03:53 PM
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930s rule the wasteland
 
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how much for exchanged injectors?
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1980 930 Turbo
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Old 12-13-2007, 06:02 PM
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Location: scotland
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Owned 2 3.3 turbos and both had shot injectors,,new set costs around 200-250 gbp here in the uk,,which is around $400-$500 dollars,,personally with my experiences i would go ahead in replace them if you have the spare cash ,,then you know you have all brand new parts in there..if not defo remove them and check/clean!
Old 12-14-2007, 06:40 AM
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I agree Stup! Thats what I will do. I changed 2 and no change. I guess I may have more than one thats bad.
This has been frustrating. I was hoping to find the one but to no avail.
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79 Euro 930

Last edited by MW4904; 12-14-2007 at 05:51 PM..
Old 12-14-2007, 04:31 PM
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