Help! I'm Stymied!, Only firing on #3 and # 4 |
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Help! I'm Stymied!, Only firing on #3 and # 4 |
DipShit |
Jun 12 2009, 10:19 AM
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#1
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Member Group: Members Posts: 199 Joined: 26-May 04 From: Cheyenne, WY Member No.: 2,107 |
1.7 D-Jet
Engine was running just great until about two weeks ago, sigh. Now only fires on # 3 and # 4. I have cleaned every connection including all grounds. And I mean cleaned them good! The elecrical appears to be just fine. I get a good noid light at both # 1 and # 2. The injectors have tested just fine as well (I'm getting about 7cc in 15 seconds). I have 40lbs of pressure the 1,2 rail. The spark plugs are getting juice and fire. I have installed new points, cleaned the triggers (which shouldn't have mattered because of the sequence) and set the dwell. I'm a tad under at 44 degrees, but again shouldn't keep # 1 and # 2 from firing. The timing has to be close as it runs really smooth for just two cylinders. If I pull the power to injector 3 or 4, I get a real good drop and she will die. If I pull 1 or 2 - no change. If I add propane to the intake, I get a good response in higher rpm. I had originally traced to the Temp II sensor and it failed, so I replaced it. A new one seemed to be the fix, but only for a moment. I have good fuel, spark and air - (IMG:style_emoticons/default/WTF.gif) I'm STYMIED (or just a REAL DIPSHIT) |
jt914-6 |
Jun 12 2009, 12:15 PM
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#2
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Driving & working on teeners 41 years Group: Members Posts: 1,786 Joined: 3-May 08 From: Bryant, Arkansas Member No.: 9,003 Region Association: South East States |
When I had a FI four we would use regular paper. You could see the black left behind on the white paper. I would not use sand paper on them.
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thompson-mfr |
Jun 12 2009, 03:25 PM
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#3
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Thompson, Ryan Group: Members Posts: 198 Joined: 30-September 08 From: Silverton, OR Member No.: 9,598 Region Association: Pacific Northwest |
When I had a FI four we would use regular paper. You could see the black left behind on the white paper. I would not use sand paper on them. If the FI trigger points were the problem wouldn't there be NO gas at the injectors???? I tested my injectors via the recommendations of Pbanders rennlist tech article. They were just like Dipshits. |
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