Fox Mustangs 1979-1993 Mustangs Member Tech & Restoration Discussion

Well now it wont even start.

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Old May 4, 2012 | 09:24 AM
  #21  
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Originally Posted by houtex
Is it running at all now? I think we need a status update on what it's currently doing, and what has been done, and what hasn't.

If it's not running at all... Did anyone suggest the fuel cutoff relay? 'Cause I don't see it... I'm sure that's not it, but... Or maybe the fuel filter or the fuel regulator...?

Naw... surely I'm being silly for questioning these...
all good points now back in your cage . he also stated they had fuel pressure at the rail so we got to that point.
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Old May 4, 2012 | 02:46 PM
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Ok so as of now we have checked timing, spark, injectors, battery, dizzy, grounding, fuel pressure, fuel quality, fuel shut off switch, new fuel filter, and now the timing cover is coming off to verify that it's in the correct position. Is it supposed to be at standard position or retard? Crane cam is mild.
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Old May 4, 2012 | 02:50 PM
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Does it have good spark to the plugs? Is there spark from the coil? If so, spray choke cleaner into the intake and see if it attempts to start. Could just be fuel. If no spark to the plugs, check power and grounds to the dizzy and coil. If power and ground is good and no fire, replace them both.
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Old May 4, 2012 | 03:05 PM
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So it's looking like the timing chain isn't At the correct position. Will keep everyone updated.
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Old May 4, 2012 | 03:07 PM
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Cool man.
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Old May 4, 2012 | 03:45 PM
  #26  
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Originally Posted by skunk21
If after all this and it still is popping and not running right then either pull the timing cover and make darn sure the timing marks are correct or test the coil and verify the spark strength. I'm getting baffled. I'm not knocking the guy but the marks can move.



oops forgot to add. set to factory marks of going that route don't retard. I'm into degreeing the cam but pretty much sounds like they do not do it so at this point skip it I guess ( makes me wonder about the builder though) the timing events are sloppy from the factory. 10hp or so can be pulled out just by degreeing the cam.

Last edited by skunk21; May 4, 2012 at 04:02 PM.
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Old May 4, 2012 | 05:39 PM
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He's going to check and see if thats what it is this weekend and after I find out I'll post the results.
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Old May 5, 2012 | 12:38 PM
  #28  
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Well the chain and sprockets were in the right position.

Well now it wont even start.-image-881087637.jpg

So back to the drawing board. He's going to dig through it again.
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Old May 5, 2012 | 03:11 PM
  #29  
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do a compression test?
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Old May 5, 2012 | 03:21 PM
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Originally Posted by Glenn
Bring number one piston up on compression stroke and see where your timing marks are located.
Originally Posted by AlsCobra
It has to be a timing/firing order issue.
Originally Posted by AlsCobra
I'm guessing distributor issue man. If compression was good then the valves aren't leaking and the timing chain is set right. Timing and firing order will cause backfire thru the intake.
Originally Posted by skunk21
If you removed the distributor, there is a good probability that you installed it 180 degrees out of time.

Firing order off: HO & 351 use a different firing order from the non HO engines.
HO & 351W 1-3-7-2-6-5-4-8
Non HO 1-5-4-2-6-3-7-8
Originally Posted by cszentes
Well the chain and sprockets were in the right position.

So back to the drawing board. He's going to dig through it again.
You're not 180 degs out are you? I had a 6 banger barely run and miss/backfire (though run at higher throttle [rough]) and the dist cap was 180 out. Pull #1 plug and verify TDC and note distributor. Verify plug wires & firing order.

Last edited by cdynaco; May 5, 2012 at 03:32 PM.
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Old May 5, 2012 | 04:00 PM
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Got him double checking all that now just to be certain. Thanks a lot guys these suggestions are great.
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Old May 5, 2012 | 04:07 PM
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<the dist cap was 180 out>

It was either that or I didn't have the plug wires on the dist in the correct order - can't remember now. It was like 10 yrs ago. But I had just put new wires on - seems like I was 1 or 2 wires off the more that I think about it. double
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Old May 5, 2012 | 04:52 PM
  #33  
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dont forget to put the wires on the cap in the firing order counterclockwise. i have put them on clockwise before on accident. oops
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Old May 5, 2012 | 07:22 PM
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So the timing was out 180. Putting it all back together and hoping for the best!!!!
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Old May 5, 2012 | 07:34 PM
  #35  
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Originally Posted by cszentes
So the timing was out 180. Putting it all back together and hoping for the best!!!!
All to common problem lol
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Old May 5, 2012 | 10:09 PM
  #36  
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Nice. Love that they'll even run that way at all.
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Old May 6, 2012 | 01:18 AM
  #37  
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Originally Posted by cszentes
So the timing was out 180. Putting it all back together and hoping for the best!!!!
:fingerscrossed:
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Old May 6, 2012 | 04:15 AM
  #38  
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Originally Posted by cszentes
So the timing was out 180. Putting it all back together and hoping for the best!!!!
I'm hoping for the best also then I'll extend my post.
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Old May 7, 2012 | 04:58 PM
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Update: back together, didn't fire going through everything found right spark is weak/ yellow and intermittent. Looking at ignition coil. Will post when I hear something.
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Old May 8, 2012 | 05:15 PM
  #40  
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Spark is good have lots of fuel and air. Why would this not start????????? It has everything it needs there isn't any reason for it not to start any ideas???
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