Weirdness when I started the IDI today.
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Cargo Master
Joined: Oct 2012
Posts: 3,072
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From: California
Weirdness when I started the IDI today.
I've been driving my van around for a while now as a daily driver. Trying to test certain things at the moment, so I'm using it for long and short trips.
Today, I came out to start it, and it acted as if the IP was not pushing any fuel into the injectors. I had to crack the lines just to get it to purge the air out. No real reason why this should have happened. I don't have air in the fuel lines, I had fuel in the tank, and I had just run it 16 hours before without issues.
The only thing that was different was, I had forgotten to put the oil fill cap back on throughout the night. Is there an odd possibility that having an open block could potentially allow my IP to lose its prime?
Today, I came out to start it, and it acted as if the IP was not pushing any fuel into the injectors. I had to crack the lines just to get it to purge the air out. No real reason why this should have happened. I don't have air in the fuel lines, I had fuel in the tank, and I had just run it 16 hours before without issues.
The only thing that was different was, I had forgotten to put the oil fill cap back on throughout the night. Is there an odd possibility that having an open block could potentially allow my IP to lose its prime?
Postmaster
Joined: Dec 2011
Posts: 3,860
Likes: 7
My guess is that your lift pump stuck open for some reason. Perhaps a little bit of crud got into one of the check valves and prevented it from sealing?
Again, my solution for any such issues: Add a primer bulb after the lift pump and before the fuel filter. They have 2 check valves in them, so you get added drainback protection.
Senior User
Joined: Feb 2011
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From: Roslyn, Wa.
Oh! Interesting idea
Junior User
Joined: Jun 2015
Posts: 78
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From: N. Arizona
Check the ground to the FSS. I had an issue where my truck would randomly shut down on me and I thought i was getting air in the lines. I would crank and bleed the lines to no avail then randomnly it would just light off like nothing ever happened. Turned out the bad connection was tripping the FSS then it would get bumped or whatever and be fine again.
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Cargo Master
Joined: Oct 2012
Posts: 3,072
Likes: 48
From: California
Check the ground to the FSS. I had an issue where my truck would randomly shut down on me and I thought i was getting air in the lines. I would crank and bleed the lines to no avail then randomnly it would just light off like nothing ever happened. Turned out the bad connection was tripping the FSS then it would get bumped or whatever and be fine again.
Junior User
Joined: Jun 2015
Posts: 78
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From: N. Arizona
Sounds like a good idea to me. It's the first thing I check now, but before it happened to me I spent an hour on the side of the road cranking and bleeding and trying to figure out where the fuel was stopping. A light would have saved me a lot of headache
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