3rd Gen / L98 Engine Tech 1982 - 1992 Engine Related

Timing Chain or ?

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Old Jun 20, 2002 | 05:55 PM
  #1  
SnkEatr's Avatar
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From: Tampa, FL USA
Post Timing Chain or ?

Hey folks I just had my wifes 92 RS 3.1L towed to the house she told me it was fine until he started to leave a light in first when it rumbled and misfired and sounded like it backfired. she got it off the road and it was running real rough. then it just wuit running. I checked the usual spark seems ok. But no fire with fuel or ether starting fluid sprayed directly into the manifold. what next could it be the timing chain, I would think you might get some kind of fire with the ether. let me knwo what ya think.
Old Jun 20, 2002 | 08:40 PM
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If you popped the timing chain you wouldn't get any spark since the distributor wouldn't be turning. However, it mighta jumped a tooth or two. Pull a couple easy-access plugs and check compression. If it's jumped a tooth or two it will either have low compression (from late intake valve closing) or none (from valves that have hit the pistons and bent).
Old Jun 21, 2002 | 06:03 AM
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ttt
Old Jun 21, 2002 | 07:57 AM
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Is it a healthy spark? When I bought my 89 Formula it wasn't running (it had been a couple of days before), so I figured ignition or fuel. Towed it home, pressure good and it had a spark so??? Spark didn't look quite right, so I pulled module and coil and took them to Autozone and had them checked on their tester. Module bad, 35 bucks and I was cruising that night.
Old Jun 22, 2002 | 01:01 PM
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Update.......... Pulled Ignition Module had it tested at Autozone it was bad.. still no fire though changed d cap, rotor, plugs, and wires still no fire. ran a compression test on 3 cylinders all 150 to 165 lbs. what could it be!!!!!!!!!!!

------------------
96 Black Z28 A4
Moroso CAI, Flowmaster 40
!MAF, HyperCrap Power+ for fan and shift firmness only, Hypertech 160 Stat.
2.73 Gears TAG SNK EATR
Best Time at Sunshine Speedway
R/T .501 <---- Dig That!!
60' 2.109
330 5.992
1/8 9.186
MPH 77.26
Soon to be a 383 Stroker

Wifes Ride Needing a BB
92 RS 25th Anniversary Ed.
Purple 3.1 V6/M5
Flowmaster series 40
Old Jun 22, 2002 | 01:54 PM
  #6  
SnkEatr's Avatar
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From: Tampa, FL USA
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Update........rotated the distributor 20 degrees advance fired but will not run the timing chain must have jumped a tooth on the timing gears. will change that next cna anyone tell me how to degree the cam to the crank on a 3.1 V6???????

------------------
96 Black Z28 A4
Moroso CAI, Flowmaster 40
!MAF, HyperCrap Power+ for fan and shift firmness only, Hypertech 160 Stat.
2.73 Gears TAG SNK EATR
Best Time at Sunshine Speedway
R/T .501 <---- Dig That!!
60' 2.109
330 5.992
1/8 9.186
MPH 77.26
Soon to be a 383 Stroker

Wifes Ride Needing a BB
92 RS 25th Anniversary Ed.
Purple 3.1 V6/M5
Flowmaster series 40
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