 Fuel Injector Going Bad?, FIXED - Thanks 914 World! |
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| saigon71 |
 Jun 10 2015, 07:32 PM
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Advanced Member  Group: Members Posts: 2,020 Joined: 1-June 09 From: Dillsburg, PA Member No.: 10,428 Region Association: MidAtlantic Region 
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74 2.0 D-Jet. Car is in a fine state of tune. Verified fuel pressure at 30 PSI. Removed distributor, cleaned & lubed advance plates and tested vacuum canister. Verified TPS is set correctly. MPS tested fine. ORIGINAL fuel injection harness. I went around the engine bay today and re-seated all FI related connections. The injectors are in unknown condition - came with the car.
This is different than the bucking I used to experience. I intermittently have a cylinder drop off. It happens at all speeds, but is really noticeable at idle. I had it running for a while in my driveway tonight and the exhaust fumes spelled especially "gassy." When it's not missing, it runs fantastic and idles perfectly. I think I have a fuel injector going bad. Can they fail intermittently? Anyone else experience something like this? I figured I would just pull all four injectors, run the fuel pump and measure the fuel...but I'm not sure I could find the faulty one if it functions correctly during the test. Pretty boring video (IMG:style_emoticons/default/dry.gif) Engine starts running rough intermittently at :40 (engine bay sound) and 2:07 exhaust. https://www.youtube.com/watch?v=xQoMS-NeOag...eature=youtu.be Any advice is appreciated. |
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| r_towle |
Jun 11 2015, 06:54 AM
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#2
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Custom Member Group: Members Posts: 24,705 Joined: 9-January 03 From: Taxachusetts Member No.: 124 Region Association: North East States
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I have had the following.
Loose electrical connector at injector...wiggle loose randomly, fixed with new boots Old worn out FI trigger points, new trigger points Fuel filter clogged, crap in tank.....full douche, two new inline filter. All of those problems gave me your conditions...all are pretty cheap to fix... Rich |
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Posts in this topic
saigon71 Fuel Injector Going Bad? Jun 10 2015, 07:32 PM
Mblizzard I would suggest disconnecting the injectors one at... Jun 10 2015, 07:46 PM mepstein If the injectors have never been cleaned, consider... Jun 10 2015, 08:07 PM
Cj Honeycutt
If the injectors have never been cleaned, conside... Jun 12 2015, 06:59 PM Mark Henry The quick and dirty is to remove the wire one inje... Jun 11 2015, 05:30 AM jim_hoyland Connections /connectors at the injectors was a pro... Jun 11 2015, 06:09 AM Philip W. i had a similar issue with my75 d-jet and thought ... Jun 11 2015, 06:45 AM r_towle duplicate Jun 11 2015, 06:54 AM dlee6204
[quote name='mepstein' post='2197405' date='Jun 1... Jun 12 2015, 07:42 PM mepstein
[quote name='mepstein' post='2197405' date='Jun ... Jun 12 2015, 07:54 PM kertwerks Group,
I've used the original bosch dizzy and... Jun 14 2015, 09:57 PM saigon71 Thanks for the responses. The trigger points were... Jun 15 2015, 06:15 AM mepstein Use a $6 usps priority box and you might have... Jun 15 2015, 06:40 AM dlee6204 I've used Mr. Injector several times for a cou... Jun 15 2015, 07:45 AM saigon71 I believe I have eliminated everything but the ECU... Jun 28 2015, 02:24 PM BeatNavy Hey Bob - sorry to hear you're still chasing t... Jun 28 2015, 03:34 PM mepstein I'll ship you the ecu and harness from my ... Jun 28 2015, 03:59 PM saigon71
I'll ship you the ecu and harness from my ... Jun 28 2015, 09:18 PM Ian Stott When you tested your fuel pressure and you said it... Jun 28 2015, 04:53 PM BeatNavy
When you tested your fuel pressure and you said i... Jun 28 2015, 05:05 PM saigon71
When you tested your fuel pressure and you said ... Jun 28 2015, 09:14 PM 914Mels Another possible problem would be the trigger poin... Jun 29 2015, 02:37 PM saigon71 Well, the problem is fixed!
I filled up the... Jul 8 2015, 07:33 PM Philip W.
Well, the problem is fixed!
I filled up th... Jul 8 2015, 07:59 PM Jeff Bowlsby Great News Bob! Glad it worked out for you an... Jul 8 2015, 08:44 PM |
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