 1.8 Ljet overfuels |
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| davesprinkle |
 Dec 30 2007, 09:09 PM
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Senior Member  Group: Members Posts: 720 Joined: 13-October 04 From: Berkeley, CA Member No.: 2,943 Region Association: None 
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My 1.8 Ljet left me stranded yesterday. I did the usual debug stuff. Turns out the ECU is overfueling the engine. Injector pulsewidths are 10ms to 15ms under cranking conditions. This is roughly 10x what I would expect at startup. Anybody have any suggestions for what might be causing this problem? The airflow sensor maybe?
Thanks for any suggestions you can offer. -dave sprinkle |
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| davesprinkle |
Dec 31 2007, 09:39 AM
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#2
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Senior Member Group: Members Posts: 720 Joined: 13-October 04 From: Berkeley, CA Member No.: 2,943 Region Association: None
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Thanks for your responses, guys. Ground are OK. Fuel pressure is 40psi.
Here's the fundamental problem -- the injector pulsewidths are 10ms when cranking. This is roughly 10 times larger than what would be valid for a starting condition. It ain't the pressure, and it ain't the cold-start valve. The ECU is commanding too much fuel. |
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Posts in this topic
davesprinkle 1.8 Ljet overfuels Dec 30 2007, 09:09 PM
Twystd1 Check your grounds FIRST....!!!!... Dec 30 2007, 09:17 PM kwales If your fuel pressure regulator is sticking, then ... Dec 31 2007, 09:11 AM Cap'n Krusty FIRST thing to check on a 1.8 is the air flow mete... Dec 31 2007, 09:58 AM
davesprinkle
FIRST thing to check on a 1.8 is the air flow met... Dec 31 2007, 03:37 PM davesprinkle I've finally found the cause of my ljet fuelin... Mar 29 2008, 12:59 PM type47
A puncture in the pressure reg diaphragm
now ... Mar 29 2008, 07:02 PM davesprinkle Thanks for the kind words, but I can't claim a... Mar 29 2008, 07:41 PM Cap'n Krusty That's not all that uncommon on Vanagons, BMWs... Mar 29 2008, 04:05 PM davesprinkle Yeah, thanks for the support, Cap'n. Wanna se... Mar 29 2008, 06:56 PM jesiv I don't quite understand. However, this sound... Mar 29 2008, 10:38 PM davesprinkle Sorry, James, don't have any pics of the damag... Mar 30 2008, 12:10 AM |
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