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engine guru's inside!!!!

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Old Jan 31, 2008 | 10:39 PM
  #21  
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Default RE: engine guru's inside!!!!

I thought stock is 10* advanced? Ill try to set it on 0. Setting it on 10* worked on my last motor. yes, i was turning the motor over the right way
Old Jan 31, 2008 | 11:24 PM
  #22  
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Default RE: engine guru's inside!!!!

Really do a compression test. Just because you lined the dots up, doesn't mean the gears were marked properly, or that the dowl hole in the cam was drilled in the right spot. Any number of variables can cause something like that to happen during manufacturing, which is why all the cam makers reccomend that you degree the cam when you install it. That's the only way to be sure the cam timing is right. You can put it all together, with the dots lined up and everything, and be off with the cam timing if something ain't right. And if you build enough engines, you run into incorrectly marked cam gears sooner or later. A compression test is quick, all you need is 1 cylinder, if it's 0 or close to 0 then try a few others, if they're all basically 0 then your cam timing is out. That's quicker than chasing down the other types of starting/drivability issues. You'll know in 5 minutes whether or not compression is the problem. If compression is good then folow the EFI no start algorithms.
Old Jan 31, 2008 | 11:30 PM
  #23  
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Default RE: engine guru's inside!!!!

ORIGINAL: 67mustang302

Really do a compression test. Just because you lined the dots up, doesn't mean the gears were marked properly, or that the dowl hole in the cam was drilled in the right spot. Any number of variables can cause something like that to happen during manufacturing, which is why all the cam makers reccomend that you degree the cam when you install it. That's the only way to be sure the cam timing is right. You can put it all together, with the dots lined up and everything, and be off with the cam timing if something ain't right.
And if you build enough engines, you run into incorrectly marked cam gears sooner or later. A compression test is quick, all you need is 1 cylinder, if it's 0 or close to 0 then try a few others, if they're all basically 0 then your cam timing is out. That's quicker than chasing down the other types of starting/drivability issues. You'll know in 5 minutes whether or not compression is the problem. If compression is good then folow the EFI no start algorithms.
Uea, but this is the same cam, and timing chain set from the previous motor that ran perfectly fine. I will do the compression test tomorrow and return back with results.
Old Jan 31, 2008 | 11:37 PM
  #24  
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Default RE: engine guru's inside!!!!

If the dots were lined up in the previous engine then that's not the problem. It never hurts to check compression anyway though.
Old Feb 1, 2008 | 10:29 AM
  #25  
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Default RE: engine guru's inside!!!!

This is common sense, but make sure that your coil is plugged in, its easy to overlook and it will make the same symptoms as what you are saying if not connected.
Old Feb 1, 2008 | 01:33 PM
  #26  
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OK, did a compression test, and the first cylinder i tried(#5) 0 compression. I took the valve covers off and tried adjusting teh valves again, still no compression. Not even moving the needle. Then i just backed off the rockers completely and finally got a little compression, but nothing to write home about. I think it may have read like 15 or 20. So what is the deal? The head gaskets are brand new, teh heads ran fine on my other motor, what should I look for? Could the deck surface be bad? Im running out of ideas, and going crazy trying to get this thing to run
Old Feb 1, 2008 | 03:10 PM
  #27  
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Default RE: engine guru's inside!!!!

mine i wish i could help u but others have took my ideas spark,fuel u said do u have a guage , ?????

i am fighting my own battle right now in my thread good luck and lets see some pictures, so did u transfer over your trickflow stuff with this motor? so did your old motor spin a bearing thanks to a little boost?
Old Feb 1, 2008 | 03:49 PM
  #28  
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Default RE: engine guru's inside!!!!

ORIGINAL: jtmustang

mine i wish i could help u but others have took my ideas spark,fuel u said do u have a guage , ?????

i am fighting my own battle right now in my thread good luck and lets see some pictures, so did u transfer over your trickflow stuff with this motor? so did your old motor spin a bearing thanks to a little boost?
Yeah, I transferred all my stuff over to the "new" motor, apparently it didnt turn out so good. TO be honest I really dont know why the other motor spun a bearing. Either way, I am seriously considering parting this thing out. I am so frustrated right now
Old Feb 1, 2008 | 04:04 PM
  #29  
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Default RE: engine guru's inside!!!!

Did you check the other cylinders for compression also?

Does it have a 'flat' sound when you're cranking it? or does it have a little lope to it?
Old Feb 1, 2008 | 04:07 PM
  #30  
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Default RE: engine guru's inside!!!!

I checked number 4, and nothing. Also, i noticed air was being pushed out of the lower intake on several cylinders. So i guess the intake valve is still open on the compression stroke. What gives??? Bent valves? Adfsklj:LKHJFADS:LJ I just wanna break something!!!!!



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