 Car wont start! |
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 May 23 2004, 10:33 AM
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#1
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 DSMCentral Freak  Group: Members Posts: 334 Joined: 29-September 02 Member No.: 21  |
OK. So I got the new head on and everything put back together and now the car wont start. Ive moved the CAS the full allowed area and back again while trying to start the car and I still get nothing. Ive quadrule checled all electical connections and all vaccuume hoses and they are on right. I replace the coilpack, checked the temperature sensor, installed a new one and it still wont start. It almost acts like its not turning over fast enough. I checked spark (brand new spark plugs) and its getting great spark and I checked fuel. Its getting fuel as well. Ive also quadruple checked the timing marks on the cams and the crank. Everything lines up perfect. Next im going to check compression, and then maybe try a pushstart??? Maybe its just not turning over fast enough? Sometimes if I charge the battery to 100% it acts like it ALMOST wants to start then goes to the normal just turning over but not firing. Any suggestions? Thanks Guys!
-------------------- 2003 Mustang GT
2008 Harley Nightster 1990 Mustang LX 5.0 notch |
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May 23 2004, 11:52 AM
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#2
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DSMCentral Freak Group: Members Posts: 334 Joined: 29-September 02 Member No.: 21 |
Compression test yielded ~50 PSI across the board! WTF?
-------------------- 2003 Mustang GT
2008 Harley Nightster 1990 Mustang LX 5.0 notch |
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May 23 2004, 12:11 PM
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#3
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 Post Master Group: Members Posts: 908 Joined: 7-October 03 From: Chillicothe, IL Member No.: 182 |
sounds like cylinder wash from all the gas. Pour a tablespoon of ATF down each plug hole to clean it up.
-------------------- GVR4 866/1000 = the perpetually broken car
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May 23 2004, 01:19 PM
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#4
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DSMCentral Freak Group: Members Posts: 334 Joined: 29-September 02 Member No.: 21 |
I dont have any ATF, cant I use just motor oil too?
-------------------- 2003 Mustang GT
2008 Harley Nightster 1990 Mustang LX 5.0 notch |
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May 23 2004, 01:28 PM
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#5
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DSMCentral Freak Group: Members Posts: 334 Joined: 29-September 02 Member No.: 21 |
Also, RIGHT before I pulled the old head I was yielding 170 PSI across the board. The old head is still in good condition as that turned oout to not be where the noise is coming from. I find it hard to belive that I could loose 120 PSI from cyl. wash??
-------------------- 2003 Mustang GT
2008 Harley Nightster 1990 Mustang LX 5.0 notch |
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May 23 2004, 01:47 PM
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#6
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 Zen Master DSM Group: Moderators Posts: 3,008 Joined: 10-January 01 From: in front of you Member No.: 5 |
Yeah, I don't think you lost 120 psi from cylinder wash, either. Are absolutely sure your timing marks are all lining up correctly? Almost sounds like your valves may not be seating all the way.
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May 23 2004, 02:01 PM
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#7
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DSM Tech Wizard Group: Members Posts: 2,256 Joined: 10-January 01 From: central IL Member No.: 10 |
Mark, it sounds like that head is junk... Let me get ahold of Slo-pony who origonaly had the work done to it to see if there is anything I can do for you, other than just get your money back....
-------------------- The fastest car I own is a minivan....
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May 23 2004, 04:15 PM
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#8
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DSMCentral Freak Group: Members Posts: 334 Joined: 29-September 02 Member No.: 21 |
Yeah. I'm pretty sure its the head Rob. When I pulled it off there was antifreeze between it and the block and between it and the head. I'm assuming its probably just warped. Its a relatively easy fix. Let me get the old head back on and I'll let you know for sure whats up. If so I dont blame you at all. We've done quite a bit of business together and I entirely trust you. Now Travis on the otherhand has had my transmission for 4 months now or so. LOL! (J\K Travis)
-------------------- 2003 Mustang GT
2008 Harley Nightster 1990 Mustang LX 5.0 notch |
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May 23 2004, 06:16 PM
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#9
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DSM Tech Wizard Group: Members Posts: 2,256 Joined: 10-January 01 From: central IL Member No.: 10 |
Head's been on 3 different motors now with not over 90psi compression... I don't think it was right to begin with Spy... Can you remember if there was any warranty that came with it when you got it back?
-------------------- The fastest car I own is a minivan....
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May 23 2004, 07:49 PM
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#10
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DSMCentral Freak Group: Members Posts: 334 Joined: 29-September 02 Member No.: 21 |
I'm afraid that the head is toast Rob. I threw the original back on and she fired up right away. Havnt done a compression test on her as I was working for 15 minutes in the pouring rain just to get her done. I'm afraid I'm stuck at setting the timing for fear of shocking the hell out of my soaked self.
I'm not in a hurry for whatever we decide to do. BTW- Its not making "valvetrain" noises anymore so im assuming that it was the tbelt tensioner that was making the original noises.
-------------------- 2003 Mustang GT
2008 Harley Nightster 1990 Mustang LX 5.0 notch |
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May 23 2004, 10:01 PM
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#11
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 Post Master Group: Members Posts: 972 Joined: 30-October 02 Member No.: 34 |
QUOTE (mark95turbo @ May 23 2004, 10:15 PM) Now Travis on the otherhand has had my transmission for 4 months now or so. LOL! (J\K Travis) Muah ha ha ha. And I plan to hold it hostage while I conquer the world. Muah ha ha ha 
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May 24 2004, 07:58 AM
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#12
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Zen Master DSM Group: Moderators Posts: 3,008 Joined: 10-January 01 From: in front of you Member No.: 5 |
Is that the same head that was on the red car that I put a different short block in?
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May 24 2004, 07:59 AM
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#13
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DSM Tech Wizard Group: Members Posts: 2,256 Joined: 10-January 01 From: central IL Member No.: 10 |
Yep... I don't think that block was bad after all...
-------------------- The fastest car I own is a minivan....
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May 24 2004, 08:17 AM
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#14
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Zen Master DSM Group: Moderators Posts: 3,008 Joined: 10-January 01 From: in front of you Member No.: 5 |
That head hasn't run on anything since it was machined then, has it!? Who did the machine work on it?
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May 24 2004, 10:14 AM
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#15
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 Post Master Group: Members Posts: 658 Joined: 7-October 03 From: Pekin Member No.: 181 |
we had 20-30-40-30 or something close to that....
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May 24 2004, 02:18 PM
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#16
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DSMCentral Freak Group: Members Posts: 334 Joined: 29-September 02 Member No.: 21 |
QUOTE (spyonu2007 @ May 24 2004, 07:26 PM) No warranty after it it has came off the original motor and was put on the other. Slopny stated that they could field questions inregards to the warranty. Though I do feel somewhat responsible, since I said it was a good head, after the machine shop bill it should of been. Thats about what I got as far as compression. -------------------- 2003 Mustang GT
2008 Harley Nightster 1990 Mustang LX 5.0 notch |
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May 24 2004, 02:53 PM
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#17
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Post Master Group: Members Posts: 658 Joined: 7-October 03 From: Pekin Member No.: 181 |
I say we SMASH IT. group SMASHING.
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May 24 2004, 03:07 PM
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#18
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DSMCentral Godfather Group: Admin Posts: 3,823 Joined: 10-January 01 From: Washburn Member No.: 26 |
From my experience a bad head or valves will result in very very litle or no compression at all. Obviously a burnt or stuck valve will yield no compression, and a warped head that is bad enough to keep an engine from starting would leak air audibly during testing. So although the number of engines this head has been on makes the head seam quetionable, it's pretty rare to see even 90 psi with that kind of problem.
-------------------- In Loving memory of David T Crebo
Greatness comes from the most unexpected places!  |
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May 24 2004, 03:32 PM
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#19
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Post Master Group: Members Posts: 658 Joined: 7-October 03 From: Pekin Member No.: 181 |
I think the heads warped from the fact that it didnt fit on the ARP's, the coolant, and the low compression on a good block.
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May 24 2004, 04:09 PM
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#20
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 Post Master Group: Members Posts: 774 Joined: 28-October 02 From: Pekin Member No.: 32 |
Smashing sounds like the most productive solution...
-------------------- 2009 Scion Tc
1994 Del Sol Si 1991 Talon TSi AWD 1990 Mustang GT FOR SALE!!! |
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