it would appear that I'm not getting fuel out the injectors |
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it would appear that I'm not getting fuel out the injectors |
Downerman |
Apr 26 2019, 03:17 PM
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#1
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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 |
Superhawk996 |
Apr 28 2019, 10:54 AM
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#2
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914 Guru Group: Members Posts: 5,965 Joined: 25-August 18 From: Woods of N. Idaho Member No.: 22,428 Region Association: Galt's Gulch |
If you are absolutely sure you checked engine dead cold and you had the cylinder exact TDC, and the exhaust valves were tight (i.e. you backed them off), this is an early warning sign.
Valve stem is stretching. Next occurrence in the sequence is that the valve head breaks off and destroy's your engine. Double check that you adjusted properly. Keep a very close eye on valve adjustment. If the exhaust valve gets tight again . . . rebuild the heads before engine failure occurs. |
Downerman |
Apr 28 2019, 12:10 PM
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#3
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Member Group: Members Posts: 168 Joined: 23-April 09 From: Monterey County, California Member No.: 10,296 Region Association: None |
If you are absolutely sure you checked engine dead cold and you had the cylinder exact TDC, and the exhaust valves were tight (i.e. you backed them off), this is an early warning sign. Valve stem is stretching. Next occurrence in the sequence is that the valve head breaks off and destroy's your engine. Double check that you adjusted properly. Keep a very close eye on valve adjustment. If the exhaust valve gets tight again . . . rebuild the heads before engine failure occurs. Interesting.... The engine is rebuilt but never has fired up. The heads are completely rebuilt. Like I said.... never even a bad fire up. I'm wondering if I went clockwise on the fan like my 911 not even thinking but that wouldn't explain why the intakes were decent. I don't know... compression check and injector test after the honey do list is done. |
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