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Old 01-18-2013, 07:55 AM   #31
svtguy88
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Check for spark yet?

I'll probably catch some flack for this, but it's never caused me any problems: disable the fuel system, pull one plug at a time, ground it out and crank the engine -- watch for a good strong spark.
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Old 01-18-2013, 08:09 AM   #32
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Quote:
Originally Posted by svtguy88 View Post
Check for spark yet?

I'll probably catch some flack for this, but it's never caused me any problems: disable the fuel system, pull one plug at a time, ground it out and crank the engine -- watch for a good strong spark.
I'm either gonna try that soon, or pick up something like this:

http://www.amazon.com/Lisle-20610-In...s=spark+tester



Edit: Bought that and a compression tester from Amazon.
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Old 01-18-2013, 09:34 AM   #33
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Before you do the compression test, I think it'd be worth the time to turn the engine over by hand. If there's a timing issue you might notice it this way first and prevent further damage.
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Old 01-18-2013, 09:44 AM   #34
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Has the timing belt ever been changed? If not that's probably whats wrong with it. Should be changed around 60-80k mi on the SVT.
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Old 01-18-2013, 09:52 AM   #35
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Quote:
Originally Posted by 6SPD_soul View Post
If there's a timing issue you might notice it this way first and prevent further damage.
If I understand correctly, the car has been cranked plenty of times since it stopped running...so any potential further damage would have likely already ensued...
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Old 01-18-2013, 10:01 AM   #36
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If I understand correctly, the car has been cranked plenty of times since it stopped running...so any potential further damage would have likely already ensued...
Yeah, I know, if the unthinkable happened then the damage is already done, but it's something he can do in the mean time before he gets the compression tester. Sleepyboy, he said the belt was changed (IIRC) 55K miles ago. That's no guarantee though.
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Old 01-18-2013, 10:20 AM   #37
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Quote:
Originally Posted by 6SPD_soul View Post
Before you do the compression test, I think it'd be worth the time to turn the engine over by hand. If there's a timing issue you might notice it this way first and prevent further damage.
I could give that a shot, but I don't think it's timing related.

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Has the timing belt ever been changed? If not that's probably whats wrong with it. Should be changed around 60-80k mi on the SVT.
It was changed 55k ago, at 80k miles.

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If I understand correctly, the car has been cranked plenty of times since it stopped running...so any potential further damage would have likely already ensued...
I can crank it all day. The shop even had it running briefly, albeit roughly.

Quote:
Originally Posted by 6SPD_soul View Post
Yeah, I know, if the unthinkable happened then the damage is already done, but it's something he can do in the mean time before he gets the compression tester. Sleepyboy, he said the belt was changed (IIRC) 55K miles ago. That's no guarantee though.
Correct. Previous owner was a Ford mechanic and seemed to be a pretty honest guy.

Wouldn't a timing belt issue be more.. noticeable? I mean the car was running when this all happened, but it was running quite rough. It didn't sound like it was going to rip itself apart though. I maybe could have driven it home, but decided to be safe and tow it because of timing belt concerns.
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Old 01-18-2013, 10:24 AM   #38
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Quote:
Originally Posted by swansong View Post
Wouldn't a timing belt issue be more.. noticeable? I mean the car was running when this all happened, but it was running quite rough. It didn't sound like it was going to rip itself apart though. I maybe could have driven it home, but decided to be safe and tow it because of timing belt concerns.
The belt could have stretched and slipped, and you could now be a few teeth off..

But it the belt was done that recently, I highly doubt it.
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Old 01-18-2013, 11:10 AM   #39
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Gonna update my to-do list.

1. Compression check. Should be at least 100 psi. Move on if ok. Stop if any one cylinder significantly below that. Pull out hair.
2. Spark test. Check for spark at each plug. Move on if ok. If not, double check boot wiring/fit, and coil wiring/connection. Consider replacing coils.
3. Crankshaft position sensor. Can this be tested with voltmeter or datalogger?
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Old 01-18-2013, 11:23 AM   #40
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I could be wrong, but I think a bad crank sensor would throw a CEL?
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