 No Fuel from Injectors, in crank mode |
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| cary |
 Jan 15 2006, 09:29 PM
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#1
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Advanced Member  Group: Members Posts: 3,900 Joined: 26-January 04 From: Sherwood Oregon Member No.: 1,608 Region Association: Pacific Northwest 
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We're still pulling our hair out. Took a perfectly running car. Pulled the engine to install a new muffler and straighten the front motor mount.
Now it won't start at times. Right now I have NO FUEL SPRAY from the injectors when we crank the ignition. It won't start like that. (IMG:http://www.914world.com/bbs2/html/emoticons/mad.gif) Checked the valve adjustment, A-Ok. Checked the ignition. All checked out, both HT & LT. We did have the ignition wire hooked to the (-) for a while. But switching it back didn't help. Could that have burned up something I can't see ? Fuel pressure perfect 29psi. Pumps 8 oz in 15 seconds. Here's what I have now : When you charge the ignition. One opposing pair of the injectors click. But a couple times. I got nothing. ZERO. Then I unhook the harness to check the trigger points. I still get the click of the injectors with the harness unplugged. Is that right ? So that leads me to test the harness to the ECU. All three (12, 21 & 22) test fine. Both continuity and signal. Still stumped. Tested the signal out of the trigger point connector. Fine on both sides. Now I pull the injectors to test for spray. Nothing. I get a burst at the start. None during the cranking. Then a couple bursts when we turn the key off crank. That is screwed up. Pulled the plugs dry as a bone. There has to be a simple answer. Its not that complex. But I'm missing something. How come no spray at ignition crank ? |
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| DNHunt |
Jan 16 2006, 11:56 AM
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914 Wizard? No way. I got too much to learn. Group: Members Posts: 4,099 Joined: 21-April 03 From: Gig Harbor, WA Member No.: 598 |
Wait a minute. I don't think i understood. Are you saying all of the injectors open? If so then there are a couple of possibilities. One is fuel delivery. What is the fuel pressure? Fuel may not be getting to the injectors so check the fuel pressure regulator with a gauge, fuel pump, fuel filter, sock in the fuel tank. Second possibility is electrical if fuel is getting to the injectors at the correct pressure.
These are peak and hold injectors so full current opens them and it is reduced to hold them open. Check the resistance in the harness. They may be openning and then not have enough current to hold them open so the pulsewidth is too short. The injectors maybe failing. Swap them to the other side and see if the problem follows them. Good luck Dave |
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Posts in this topic
cary No Fuel from Injectors, in crank mode Jan 15 2006, 09:29 PM
boxstr If your car has a bad injector resistor pack that ... Jan 15 2006, 09:31 PM bd1308 this is D-jet right?
b Jan 15 2006, 09:32 PM cary Sorry, 73 1.7 D-Jet.
Craig,
Where is it located ... Jan 15 2006, 09:37 PM bd1308 scratch the resistor pack comment.
_Djet didnt ha... Jan 15 2006, 09:40 PM boxstr Here is what one looks like.
CCLINSHOWME Jan 15 2006, 10:12 PM boxstr Okay never mind.
CCLINOKAY Jan 15 2006, 10:13 PM bd1308 Jan 15 2006, 10:15 PM cary Beats the s*** out of me.
Went back after dinner.... Jan 15 2006, 11:57 PM cary Well its a new day. Went out this am to start it. ... Jan 16 2006, 08:39 AM DNHunt Cary
A bad CHT will keep the car from starting bu... Jan 16 2006, 08:55 AM cary Dave, your right. Backwards. The CHT would give ex... Jan 16 2006, 11:06 AM bd1308 maybe its time to get the harness rebuilt?
b Jan 16 2006, 11:11 AM cary I'm thinking the same thing. I was just away a... Jan 16 2006, 11:18 AM 2-OH! Broken wire/connection at the injector connector(s... Jan 16 2006, 02:07 PM dlo914 Jan 16 2006, 02:15 PM dlo914 Jan 16 2006, 02:17 PM boxstr The one on the left. Jan 16 2006, 02:19 PM bd1308 dlo, this is what I owe you...i'm working on i... Jan 16 2006, 02:43 PM cary Jan 16 2006, 02:47 PM bd1308 how bout swapping in another brain?
b Jan 16 2006, 02:49 PM cary Went home for lunch. Super In Law had the dizzy ou... Jan 16 2006, 03:02 PM cary Jan 16 2006, 03:03 PM DNHunt Explanation: Magic Smoke http://... Jan 16 2006, 03:16 PM DNHunt I would imagine that the brain fires a priming pul... Jan 16 2006, 03:20 PM cary I have to whole web site printed and in a three ri... Jan 16 2006, 03:57 PM cary Update:
Super In Law pulled the trigger points fr... Jan 16 2006, 05:09 PM cary Okay it lives. Plus it has a bitch'n tune up. ... Jan 16 2006, 11:17 PM DNHunt Good work you guys. I'm glad you have it up an... Jan 17 2006, 07:39 AM
cary Could have taken the top off yesterday. 35 degrees... Jan 17 2006, 07:53 AM |
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