 2 Injectors not firing, HELP!!!!!! |
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| nsyr |
 May 11 2005, 09:29 AM
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#1
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Because I Can  Group: Members Posts: 314 Joined: 16-May 04 From: Tampa, FL Member No.: 2,073  |
I have a half running 2.0 and when I say half running I mean only cyl 3 & 4 are running. I pulled out all the injectors and put them into baby bottles, cranked the engine and nothing came out of 1 & 2. The fuel line circuit is complete and working ( there is fuel for the injectors ). I haven't had the time yet to look to far into it, I was just wondering if anyone might know the cause.
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Replies(1 - 9)
| skline |
May 11 2005, 09:37 AM
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#2
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Born to Drive Group: Members Posts: 7,910 Joined: 26-December 02 From: Costa Mesa, CA Member No.: 17 Region Association: Southern California |
If it is D-jet, check your pressure and the trigger points in the distributor. Check your electrical connections also. Its probably something easy.
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| lapuwali |
May 11 2005, 09:42 AM
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#3
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Not another one! Group: Benefactors Posts: 4,526 Joined: 1-March 04 From: San Mateo, CA Member No.: 1,743  |
Trigger points. They fire the injectors in pairs, so if one pair isn't working, it's those points, or the wiring to them.
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| goose2 |
May 11 2005, 09:50 AM
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#4
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Senior Member Group: Members Posts: 976 Joined: 30-March 05 From: Eugene, Oregon Member No.: 3,847 Region Association: Pacific Northwest |
Yep..trigger points most likely, been there.
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| Mueller |
May 11 2005, 10:02 AM
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#5
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914 Freak! Group: Members Posts: 17,146 Joined: 4-January 03 From: Antioch, CA Member No.: 87 Region Association: None 
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I thought the trigger points activate in pairs like this: cyl 1 and cyl 4 cyl 2 and cyl 3 so that means the trigger points are working if 3 and 4 are working I'd check the ground to the those injectors, if it's not the ground, you have clogged injectors |
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| lapuwali |
May 11 2005, 10:11 AM
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#6
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Not another one! Group: Benefactors Posts: 4,526 Joined: 1-March 04 From: San Mateo, CA Member No.: 1,743 |
The grounds to the injectors should be in the ECU. The "switch" is between the injector and ground, not between power and the injector.
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| Cap'n Krusty |
May 11 2005, 10:12 AM
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#7
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Cap'n Krusty Group: Members Posts: 10,794 Joined: 24-June 04 From: Santa Maria, CA Member No.: 2,246 Region Association: Central California |
Nice theory, somewhat true, but it doesn't fit the question. True they fire in pairs, but it's 1/3 and 2/4, NOT 3/4. My guess, shooting from the hip, is the ground wires under the right side if the intake plenum. The Cap'n |
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| tod914 |
May 11 2005, 10:27 AM
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#8
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Advanced Member Group: Members Posts: 3,755 Joined: 19-January 03 From: Lincoln Park, NJ Member No.: 170 |
Check the voltage at the end of the FI harness ... maybe someone can chime in and let him know what it is suppose to be. Or do an A-B comparison with the working injectors.
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| nsyr |
May 11 2005, 06:41 PM
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#9
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Because I Can Group: Members Posts: 314 Joined: 16-May 04 From: Tampa, FL Member No.: 2,073 |
Well, i got em working. it was a temp sensor not hooked up and aux air valve. now that i have every thing hooked up right it still runs like crap. it almost idles and if i touch the throttle it bogs and dies. i do have one problem i haven't been able to figure out yet. the fuel pump won't come on unless i ground the terminal on the relay board where the white 19 wire goes. i did disconect the white wire first so i don't destroy the controller. i am wondering if this is contributing to the engine running bad.
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| Dave_Darling |
May 12 2005, 12:52 PM
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#10
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914 Idiot Group: Members Posts: 14,991 Joined: 9-January 03 From: Silicon Valley / Kailua-Kona Member No.: 121 Region Association: Northern California
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True on the L-jet cars (1.8), true on modern cars. Not true with the D-jet ones. The injectors are grounded at all times; the ECU switches them on and off with the power and not the ground. Evidently switching the ground is a better/easier/cheaper way to do it. Back on topic: If you have to jumper the relay to get the pump to run, something in the pump control circuit is not correct. Go through the fuel pump control system troubleshooting flowchart on Brad Anders' website: http://members.rennlist.com/pbanders . --DD |
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