YAY!! Another one of these threads

[TJCTalon]

Yep, this is yet another no start dsm thread. Please help out me and my buddy.

So my friend just bought a 99 gst with a 6 bolt swap. The swap was done by a 5 year old. Shit isnt right with it. Its a complete mess. On to the story... So one day my buddy went to start his car, and the pedal went to the floor. So I figured it was the slave, we replaced it and bleed it correctly. We got pressure back in the pedal, but it still wouldnt start. This is what we have checked so far:
We have spark
Fuel pressure
Injectors are firing
Timing is spot on

We changed spark plugs and the old plugs were fauled horribly. We put new ones in and it still wouldnt start. When we took the brand new ones out 3 out of the 4 were covered in oil. Figured shit, the piston rings are done. We do a compression test and here are the results

1: 50
2: 0
3: 110
4: 145

Wouldnt it still start with the compression on the two cylinders bad??

Why was it running fine before the slave went out? With no signs of rough idle or anything?

Help us out guys, thanks a ton.

 

[cyclonekid77]

You answered your own question. The engine has very low compression on two cylinders. Something is mechanically wrong, whether its valves, rings, headgasket, pistons, something is ####ed and it has to come apart.

 

[TJCTalon]

I understand that, but why was it running fine before the slave went out? Thats the wierd part

 

[magik95]

Could have just been a freak incident. It was propably on its way out the door any how bro. Rerbuild in order. With that low of compression Im surprised it ran at all.

 

[Absit]

Uh, compression on THREE cylinders is bad (below service limit). You're trying to start the car on 1 good cylinder. Regarding the timing - moons aligned?

 

[LiquidX]

Do a leak down test to locate the actual issue. It could just be that the valves aren't seating properly for all you know.

 

[TJCTalon]

I guess he just got lucky. It ran pretty good before all this, its just really odd.

Sweet. Well I figured we were SOL. We're gonna tear into it when it warms up. Poor kid, 3 days after he buys this car it shits out on him.