0 compression no start

[Bud92gsx]

Is 0 compression even possible?

That would lead to a no start right

 

[boosted1stgen]

Timing can cause 0 compression. If timings off, then on the compression stroke all four valves wont be shut to build compression.
If you think you gauge is bad put hour hand over plug hole while its cranked, you should feel the air pressure coming out

 

[Bud92gsx]

If you jumped timing it probably bent some valves. When you discovered the timing jumped how many teeth was it off?

About 1-2 ish.

Somebody sponsor me a 2g piston 6 bolt block please.Youll get a spot in my signiture

 

[Bud92gsx]

Timing can cause 0 compression. If timings off, then on the compression stroke all four valves wont be shut to build compression.
If you think you gauge is bad put hour hand over plug hole while its cranked, you should feel the air pressure coming out

I got the damm tester stuck yesterday..Maybe the tester is faulty.

 

[Diamond Star Werks]

About 1-2 ish.

Somebody sponsor me a 2g piston 6 bolt block please.Youll get a spot in my signiture

I may have 2g pistons

 

[boosted1stgen]

I got the damm tester stuck yesterday..Maybe the tester is faulty.

Which tester are you using, a screw in kind or the one you hold in the hole

 

[Bud92gsx]

But are you wiling to trade for some recognition.

You still got my number right?

 

[BogusSVO]

Bud, since you are not sure the compression tester works or not, Try the "Backyard" compression test.

All this test will tell you is if you have 0 compression, or making compression, but it will not give you a number to let you know how much.

Remove all 4 spark plugs.

Now take 4 full sheet paper towels, wad each paper towel up and pack it in the spark plug tube.

Go turn the key so the engines spins over.

Look at the spark plug tubes.

If the paper towel shot out, you have compression.
If the paper towel is still in the spark plug tube, you have 0 compression, and you have issues to chase down.

This test is so simple a caveman can do it.

 

[Bud92gsx]

Dale again to the rescue..

I'll do it after this game of madden and let you know.

 

[Diamond Star Werks]

But are you wiling to trade for some recognition.

You still got my number right?

Yeah I'll never use the them. If I find them I'll let you know. And no I don't. Been through3 phones since then.

 

[Bud92gsx]

Edit..Dale I've got problems..the old paper towel trick came up with the same results..NADA

 

[BogusSVO]

Well, now you know it is not the tester. Seems like you have a very good chance at bent valves.

 

[Dsmkauai]

Ya bro if the belt jumped a few teeth its definitely game over. bent valves

 

[Diamond Star Werks]

Take the t belt off and see if the cams turn freely. Take vc of and see if/which rockers are loose.

 

[Bud92gsx]

If I pull the head what exactly am i looking for?

Cams turn btw.

 

[BogusSVO]

If your valves look like the ones in the first pic in this thread.

http://www.dsmtuners.com/forums/newbie-forum/341218-how-change-valve-guides-4g63t-head.html

With the cams out of the head, do this

http://www.dsmtuners.com/forums/newbie-forum/420313-how-fluid-test-4g63-cylinder-head.html

 

[Bud92gsx]

If your valves look like the ones in the first pic in this thread.

http://www.dsmtuners.com/forums/newbie-forum/341218-how-change-valve-guides-4g63t-head.html

With the cams out of the head, do this

http://www.dsmtuners.com/forums/newbie-forum/420313-how-fluid-test-4g63-cylinder-head.html

Thats ecactly what i needed thanks bro.

 

[Diamond Star Werks]

If your valves look like the ones in the first pic in this thread.

http://www.dsmtuners.com/forums/newbie-forum/341218-how-change-valve-guides-4g63t-head.html

With the cams out of the head, do this

http://www.dsmtuners.com/forums/newbie-forum/420313-how-fluid-test-4g63-cylinder-head.html

I was going to say this too. Just take head off. Remove cams. Then fill ports with water and see if any leak.

 

[1995-tsi-awd]

EDIT 3 found why it jumped timing..Tenioner arm aint putting tension on shit.

That's funny.

Use another compression gage to rule that out. If no comp, time to rebuild. I've rebuilt plenty of heads after the belt has jumped. Sometimes they just get loose and weeeee

 

[Bud92gsx]

Went to go put the timing cover back on and set it up correctly..well my intake can won't move..i bet thats bent valves.

 

[BogusSVO]

We knew it was bent valves when the wad of paper towel would not pop out.

Why you being so lazy? I thought you would have had the head off by now.

 

[T is for TURBO]

I've got a grip of oem pistons. at least one set of 2g pistons.

 

[Diamond Star Werks]

Went to go put the timing cover back on and set it up correctly..well my intake can won't move..i bet thats bent valves.

Asked that earlier and you said cams turned fine

 

[Bud92gsx]

Well it did last time..This time iI got the dowel pin on exhaust camcan up,went to do intake camcan and it woudlnt mov.

got the head unbolted late last night.so today iI'll lift it off and see what's up..too bad my computer isnt loading internet,so I could upload the photos and u guys could see them,but iI wont be able to do that either.

 

[Bud92gsx]

Wellllllll the head is off..do you want the good news or the bad news first..wellllll there is no good news..in take valves are fuuuk******* the whole intake side of the pistons are dented real good,there some shavings I'm guessing from the pistons or valves obviously..can still see the cross hatch in in the cylinder walls tho..


so wwho's my first donar.

 

[BogusSVO]

Buff the high spots off the valves.

Perform the check for bad or pinched rings, you know where the link is.

Get a good head, timing belt and parts, felpro 9627pt and ARP if you do not have them at this time.

Install and enjoy.