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ThinAir |
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#21
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Best friends ![]() ![]() ![]() ![]() Group: Members Posts: 2,543 Joined: 4-February 03 From: Flagstaff, AZ Member No.: 231 Region Association: Southwest Region ![]() ![]() |
Background: In preparation for last year's RRC I fixed the mounting on the MPS of my son's stock 1971 914-4. All seemed well until we went out for the Saturday morning run - we turned a corner and the engine suddenly died and was clearly flooded. It restarted quickly, but we had the same problem several times on that trip after that.
I assumed that I had disturbed something electrical on the passenger side of the engine and in digging around I discovered that the wire connecting the Cylinder Head Temp Sensor was corroded at its base (in fact it fell off in my hands). Ok, this is simple I said - so I bought and installed a new CHT. Current Problem: The engine will start, but runs for only about 30 seconds before it dies. At that point it will not restart, but it smells of fuel as if it is flooded. I've checked for spark and I have spark. I've disconnected, cleaned and reconnected every electrical connection on the engine & relay board that I can find - including every relay on the board. The only connections that I have not checked are the connector where the FI harness connects to the brain. Does anyone have any ideas on what could cause this and where to look next? |
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toon1 |
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#22
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Senior Member ![]() ![]() ![]() Group: Members Posts: 1,849 Joined: 29-October 05 From: tracy,ca Member No.: 5,022 ![]() |
Well I worked on it a little bit today, but did not manage to change anything. Plans have changed for this car so this is the last effort I'm going to put into this particular project. Based upon the behavior that I've seen, the circumstances of the problem's start, and reading at Brand Anders FI pages I'm convinced that I broke something in the wiring harness that just isn't readily apparent. That probably means it is in the connector. I've got a spare FI wiring harness on another engine, but we've also got a 2-liter from my son's wrecked 73 that's just sitting around. At this point we've decided to freshen the 2-liter and then install it in the 70. It's a solid car and the engine was solid at the time of the wreck so it's really a winning combination. We just can't see the effort of putting a different FI harness on an engine that we'll probably replace anyway. Thanks for all your help and advice. What are you going to do for a harness for the 2L?? Most of the harnesses suffer the same prob.,old, brittle and corroded connectors. Take a good look at the 2L harness before putting it in to sevice. Check ALL other componenets BFORE you put them into service or you may be going down the same road your on now. At close to 40yrs. old, most of this stuff is at the end of it's service life |
ThinAir |
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#23
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Best friends ![]() ![]() ![]() ![]() Group: Members Posts: 2,543 Joined: 4-February 03 From: Flagstaff, AZ Member No.: 231 Region Association: Southwest Region ![]() ![]() |
Check ALL other componenets BFORE you put them into service or you may be going down the same road your on now. At close to 40yrs. old, most of this stuff is at the end of it's service life That's a given. The 2.0 L was running when it came to my house 2 years ago and it's been protected ever since so I think we'll be ok, but that's why we're going over it with a fine-tooth comb before it goes in. We don't want to take any chances. |
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Lo-Fi Version | Time is now: 13th June 2024 - 06:03 PM |
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