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Need Injectors??

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Old Sep 16, 2011 | 04:48 PM
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Need Injectors??
ok so while trying to figure out why my truck sounds like it misses when around 1200 rpms I pulled the valve cover thinking it could be my uvch. to my suprise it already has the ford tabs under the connector and was seated snugly. So I rechecked my ohms on the outside of the harness and i'm getting 4.3, 11.5, 5.5, and 7.6 ohms on the injectors. does that indicate bad injectors? I dont have access to any software to do buzz tests and dont exactly have the cash to have a shop tell me something i can check with a multimeter.

Thanks for the help in advance
 
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Old Sep 16, 2011 | 04:54 PM
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From: AL, Reform
check the injectors right on them. it can be a bad harness.
 
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Old Sep 16, 2011 | 07:10 PM
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alrighty i'll try that hopefully tomorrow.
 
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Old Sep 16, 2011 | 09:20 PM
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While you have the valve covers off, start it and check the discharge of oil coming out of each injector too, it will help point you to possible worn injectors.
 
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Old Sep 16, 2011 | 09:21 PM
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I had the cover off today to check the harness because I thought it was the issue.. I ran it with it off and the oil coming out seemed pretty uniform between those 4 injectors.
 
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Old Sep 16, 2011 | 09:51 PM
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Well that's good, should be about a teaspoon or so evenly out of the discharges.
 
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Old Sep 17, 2011 | 11:21 AM
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Originally Posted by BigAlsPSD
Well that's good, should be about a teaspoon or so evenly out of the discharges.
thats about what it looked like. with it reading that amount of resistance, what would that cause on the truck?
 
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Old Sep 17, 2011 | 12:27 PM
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When you are measuring resistance you are checking the solenoids for the injectors, variances in resistance can be due to a lot of factors, possible winding partially grounding out, wire's touching various things in the harness, corrosion or carbon built up on pins.
 
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Old Sep 17, 2011 | 12:35 PM
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when i measured the ohms I did it from the outside of the valve cover harness.
 
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Old Sep 17, 2011 | 12:37 PM
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Then like Matt said, check the harness injectors where they connect to help isolate where the issue is.
 
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Old Sep 17, 2011 | 12:37 PM
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alrighty, hopefully I'll be able to get to that this weekend
 
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