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Downerman |
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Member ![]() ![]() Group: Members Posts: 168 Joined: 23-April 09 From: Monterey County, California Member No.: 10,296 Region Association: None ![]() |
Can't make an injector squirt. Was trying the cold start valve and then read where it had to be cold...like real cold for California as it in the high 80's today and I see it's also connected to a temp sensor so it's no wonder why that was not squirting on start. I was thinking of it as a prime of sorts for a engine cold start.
Anyway I digress. The overall problem is I crank and nothing. I smell some fuel but no leaks. Ignition was testing using Pelican parts protocol and it all checked out. As soon as the wife get's back I will actually pull a plug and see for myself at the plug but it would seem all is well there so I'm looking at fuel. MPS ohm'd out and has tangerines new diaphragm in it. I pulled an injector and checked voltage at the 2 wire plug with the starter blazing away and I got minimal voltage. I believe it was under a volt. What should that be? Can I check the injector by applying a 12V supply to the two pins? It ohm'd out at 2.5 For the record, I primed the fuel system my applying 12V to the pump for a minute. I'm at 31 not 28 based on others who have a slightly larger displacement and that's spot on. My old problem of no 1.5 burst of the fuel pump has been fixed with another ECU. So, when that 1.5 second burst happens does it also open the injectors and prime the cylinders? So close and yet so far. Dave |
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jcd914 |
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Advanced Member ![]() ![]() ![]() ![]() Group: Members Posts: 2,081 Joined: 7-February 08 From: Sacramento, CA Member No.: 8,684 Region Association: Northern California ![]() |
There is no "prime" for the injectors.
As you crank the engine the FI points in the distributor open and close signalling the FI control unit to pulse the injectors in pairs. I am not sure you can test injector operation with a voltmeter because it is a pulse no a stead voltage. Get a "noid" light at FLAPS and plug it into an injector plug and watch for it to flash while you crank the engine. At least you are moving forward and working through the issue. Good luck Jim |
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