Just sent cams to Texas for welding...only running on 7 cylinders

[MetalheadSHO]

Well, my dad bought a 1998 SHO for $300 with cam failure. We sent the cams down to Texas a couple weeks back to get them welded (welds were great by the way, in case who ever did the job is a member to this forum). We just got the car done yesterday, and low and behold, it only runs on 7 cylinders (very well though I might add ).

We cleaned the intake butterflies along the way, as they were gunked up pretty badly, and while reassembling the intake, my dad decided he would use the same intake gaskets. Could this be the problem? We're pulling a compression check today. But other than these two things, we're completely stumped. Any suggestions???

 

[Motoman991]

I thought you could reuse the intake gaskets as long as you like spray paint them or something so they seal properly again.

 

[SHO#7]

When you knew that it had cam failure, did you pull a head to check for the bent valves, or just pull the cams off.?

Mike

 

[MetalheadSHO]

I thought you could reuse the intake gaskets as long as you like spray paint them or something so they seal properly again.

He said he used sealer on them.

 

[MetalheadSHO]

When you knew that it had cam failure, did you pull a head to check for the bent valves, or just pull the cams off.?

Mike

Its got all new valves on the front side head. The rear didn't have cam failure, but they were welded as well.

 

[NebraskaSHO]

Bad coil

I've reused my intake gaskets 3 times now.

 

[MetalheadSHO]

Is there any way we can find out which coil pack is going?

 

[hawkeye18]

Yes. Pull one COP. If engine runs worse, that's not it. If engine does not run worse, that's the one. I'm dead serious. Also, correct me if I'm wrong, but would not the OBDII catch something like this? (I'm a gen2 guy)

 

[MetalheadSHO]

How would we pull the back side coil packs and get the motor to run when the intake system is apart? I can see this working on the front side...but not the back.

 

[nothingtoseehere]

1. Remove vanity cover

2. Start engine

3. Disconnect one coil pack at a time in the front

3a. If the coil pack you disconnected makes a change, thats the culprit, if not, re-connect and move onto the next one

4. If all four fronts check out ok, turn car off

5. Remove surge tank

6. Swap known good front coils to back and back coils to front

Repeat steps 2 - 3a.

 

[Silvapain]

1. Remove vanity cover

2. Start engine

3. Disconnect one coil pack at a time in the front

3a. If the coil pack you disconnected does not make a change, thats the culprit, if it does, re-connect and move onto the next one

4. If all four fronts check out ok, turn car off

5. Remove surge tank

6. Swap known good front coils to back and back coils to front

Repeat steps 2 - 3a.

corrected.

 

[stephen newberg]

Beat me to it.

pax, smn

 

[Wess]

Yes. Pull one COP. If engine runs worse, that's not it. If engine does not run worse, that's the one. I'm dead serious. Also, correct me if I'm wrong, but would not the OBDII catch something like this? (I'm a gen2 guy)

If you're lucky, yes. Otherwise you have to use the one-by-one removal method to find the right one.

 

[nothingtoseehere]

corrected.

Yeah that to, thanks

 

[medgraphsho]

Understand too that the coils are a little sensitive.... If there was nothing wrong before , dosent mean you wont create a problem after handling them..