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type11969 |
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#1
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Senior Member ![]() ![]() ![]() Group: Members Posts: 1,231 Joined: 2-December 03 From: Collingswood, NJ Member No.: 1,410 Region Association: North East States ![]() |
My '76 Westy running a 2.0 ljet camper special engine decided not to start the other day . . . right before I was planning on driving it up to the poconos for NYE weekend. Better in my garage than up there. I haven't had a whole lot of time to troubleshoot but this is what I have so far:
Fuel pressure is at 38-40psi when cranking Injectors get 12v with the ignition on An led inline with an injector connector flashes when cranking I smell fuel when I stick my nose in the tailpipe Timing light indicates that I have spark Grounding a plug also indicates that I have spark All of the above seem to indicate that it should still start considering it was running fine over thanksgiving weekend. Only thing I did between then and now was pull the windshield to take care of some rust/install a new seal. Some other things to mention It will fire, barely, when initially cranking . . . thought this might be the engine running off of only the cold start valve but the LED test seems to indicate that the injectors should be firing. If I pull a plug, stick my hand over the hole and crank my hand sure doesn't reek of gas . . . which seems to indicate that the injectors are not firing. Then again, I've never tried this before so I'm not sure how much my hand would smell of gas anyway. So maybe the injectors are not getting enough voltage to fire? But enough to trigger the LED? I am going to pull one rail to check the spray. Any other ideas? This is cross posted on thesamba so apologies for any repeat readers. Thanks, Chris |
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type11969 |
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#2
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Senior Member ![]() ![]() ![]() Group: Members Posts: 1,231 Joined: 2-December 03 From: Collingswood, NJ Member No.: 1,410 Region Association: North East States ![]() |
Works! Why, not sure. Every test I tried it passed. Fuel pressure was good. Injectors worked, volume dispensed was equivalent and the spray pattern was good (verified by the glass jar test). Static timing was fine, spark was good all around. Put it all back together and she sprung to life. Well, took some cranking and some starter fluid but then, once running, ran fine.
The one thing I think it might be is the thermo-time switch. I found that when I was cranking to check the spray pattern the plenum would fill up with fuel and leak out the throttle body. This occurred with the AFM disconnected so I am not sure if that is part of the "shut-off" circuit. I did check and the cold start valve is not leaking when pressurized. The plugs never looked fouled though so I'm not sure this is the case. Easy enough to check, just gotta find the time. Thanks, Chris |
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