Shop having issues with car starting.

[Rohitter7878]

Long story short, sent my gst over to a shop to have the head gasket done. Now after putting it back together, they said the car doesn't start. When the master mechanic sets the timing, the valves are both open, but when he sets the timing for the non turbo the valves are closed a bit. The car does crank but when it starts, it'll backfire from the exhaust. Now they're saying they don't know what to do with it and are at a stop. He suggested maybe a look for a new engine.

 

[jesse12345]

First thing I'd check is firing order it's easy and can be overlooked. I'd double and triple check the timing. If all they did was the head gasket and it ran before they did it, I highly doubt you need an engine.

 

[petrosian]

1995 GST 7 bolt (from prior post)

Ok
A new engine? No. Something is wrong. You don’t just go from a simple head gasket replacement to the symptoms you’re describing. More information is needed for us to help.

The information you’re posting is coming from the shop that is working in your car, right? It would probably be good to get “involved” with what they’re doing (have done) and saying they’ve done to your GS-T. Was it running before they worked on it?

“The valves are both open”…. Exhaust and intake valves will not be open at the same time if the engine is in time.

What do you mean when you say they’re “setting timing for turbo” and “setting timing for non-turbo”? It’s a GS-T… there’s nothing non-turbo about it…. You mentioned this same thing in your other post that you didn’t reply to…. 4G63 timing (by the marks) is the same for both turbo and non-turbo. You also said you’ve got stock cam gears. The difference is in the camshafts…. Turbo cars use different camshafts.

https://www.dsmtuners.com/threads/issues-with-car-starting-after-head-gasket-job-95-gst-7bolt.544791/

Also, it would help other people to answer your question(s) if you complete the vehicle profile section under your user prefs. Nobody looking at this post knows what kind of DSM they’re looking at.

To end, don’t get discouraged by all of these questions etc. it’s routine, and we are (all) trying to help

 

[Rohitter7878]

First thing I'd check is firing order it's easy and can be overlooked. I'd double and triple check the timing. If all they did was the head gasket and it ran before they did it, I highly doubt you need an engine.

30yrs of experience he said he never ran into something like this...

1995 GST 7 bolt (from prior post)

Ok
A new engine? No. Something is wrong. You don’t just go from a simple head gasket replacement to the symptoms you’re describing. More information is needed for us to help.

The information you’re posting is coming from the shop that is working in your car, right? It would probably be good to get “involved” with what they’re doing (have done) and saying they’ve done to your GS-T. Was it running before they worked on it?

“The valves are both open”…. Exhaust and intake valves will not be open at the same time if the engine is in time.

What do you mean when you say they’re “setting timing for turbo” and “setting timing for non-turbo”? It’s a GS-T… there’s nothing non-turbo about it…. You mentioned this same thing in your other post that you didn’t reply to…. 4G63 timing (by the marks) is the same for both turbo and non-turbo. You also said you’ve got stock cam gears. The difference is in the camshafts…. Turbo cars use different camshafts.


Also, it would help other people to answer your question(s) if you complete the vehicle profile section under your user prefs. Nobody looking at this post knows what kind of DSM they’re looking at.

To end, don’t get discouraged by all of these questions etc. it’s routine, and we are (all) trying to help

Hey so yeah that was another post, I was trying to erase it, but what I had posted on that thread is what the tech had said about the car and the timing. The mechanic said that there is a low compression of 90 and then sometimes they don't get compression. I had the car running before this twice, first time was when I found out the radiator was cracked and 2nd time is when I swapped the radiator and then noticed coolant shooting out of my exhaust and that's what prompted me into draining oil to see if coolant was in there which there was. So I know the car starts and I also have a video of when I started the car.

 

[pauleyman]

Everything I see says they mistimed the engine. If that's true it's inexcusable for a shop.we need more info.

 

[dwb]

Mistimed and/or they bent a valve or two or 16? Seems like they should be on the hook to make it right. Video of it trying to start would possibly give us some more clues.

Any chance it's a shop near Denver?

 

[chrysler kid]

30yrs of experience he said he never ran into something like this...

That doesnt mean anything. These motors require specific expertise on setting belt tension timing with the hydraulic tensioner and the adjustable tensioner pulley.

Tell the shop you are not paying for labor and to give you your car back. If they dont know how to do a leak down test to verify they screwed the head when they did timing, there is no way they can even do simple work.

You can have 30 years experience in something and still be a dumbass, and step one of being a dumbass is not knowing how to do a leak down test to verify where they are missing compression. A leak down test would verify if compression is escaping though the head or through the piston rings

If for some reason you think you can still trust this mechanic, ask him to do a cylinder leak down test to see if compression is escaping though the head.

The fact that they cant even tell you specifically what is wrong with the current motor means they dont care, and arent qualified enough to know

I keep editing this, but in this situation DO NOT throw money at this shop just to get your car running. I would rather have a car sit for a year till I find an expert specialist who knows these cars, than to toss 5 grand and a motor at a shop who doesn't care about your vehicle

 

[1990TSIAWDTALON]

Crossing Fingers for you. This doesn't sound like a seasoned mechanic to me.

 

[Vegas Smith]

Wow. Sounds like they know they bent the valves.