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GVR-4 rocker arm popped off

black12

Proven Member
83
0
Aug 21, 2004
willingboro, New_Jersey
i heard a noise coming from my head the other day so i pulled off my valve cover. i found a rocker arm sitting at the bottom of my cylinder head. do you think i bent my valves?
 

TimG

N/T Moderator
Moderator
1,548
15
Jun 28, 2002
Aurora, ON_Canada
Rocker's don't fall off for no reason. Best way to find out is to do a compression test. If the compression is good in that cylinder then you will just have to put the rocker arm back on and fire her up.

I'd try to figure out the cause so it won't do it again. My prediction is you've lost all compression on that cylinder from the bent valve.
 

G9S1X

Proven Member
148
0
Mar 19, 2004
Fort Lauderdale, Florida
You most likely bent a valve. When I bent all 16 about a year ago most of the rocker arms came off. :notgood:
 

black12

Proven Member
83
0
Aug 21, 2004
willingboro, New_Jersey
i checked the compression on that cylinder and its at 145.i already put back on the rocker arm. is there anything else i should check
 

92awdgsx

Proven Member
487
16
Sep 16, 2002
Lincoln, Nebraska
Are your cam cap bolts loose? That would put alot more clearance in between the lobe and the rocker. Like Tim said, it didn't come off for no reason. I've only seen that happen for three reasons, bent valve, exesively worn cam journals, and weak valve springs.
 

Mike1992

Proven Member
3,339
25
Jul 19, 2003
Springfield, Missouri
I had this happen on my 90 gst before it died. I hit the limiter in 3rd hard and it popped 2 rockers. 1 actually broke and had a giant crack in the roller. Valves were bent either. I think it just floated off. :confused:
 

Jamiehatch

Probationary Member
3
0
Sep 3, 2004
Whiting, Maine
I also have a 90 Tsi turbo..The other day while driving down the road the car sputtered and died all 8 intake rockers fell off and one exhaust rocker fell off. I dont have bent valves. good oil pressure, could it possible be collapsed lifters? The cam appears to have no wear.
 

Mike1992

Proven Member
3,339
25
Jul 19, 2003
Springfield, Missouri
Jamiehatch said:
I also have a 90 Tsi turbo..The other day while driving down the road the car sputtered and died all 8 intake rockers fell off and one exhaust rocker fell off. I dont have bent valves. good oil pressure, could it possible be collapsed lifters? The cam appears to have no wear.

That is a sign of bent valves, you done a compression test on it?
 

92awdgsx

Proven Member
487
16
Sep 16, 2002
Lincoln, Nebraska
Jamiehatch said:
I also have a 90 Tsi turbo..The other day while driving down the road the car sputtered and died all 8 intake rockers fell off and one exhaust rocker fell off. I dont have bent valves. good oil pressure, could it possible be collapsed lifters? The cam appears to have no wear.

If all of those rocker came off then something is very wrong. How is the oil pressure to the head. If you don't have oil pressure to the head the lifters would collapse and then they would do that.
 

Jersey

Probationary Member
2
0
May 14, 2022
Flagler, Florida
Rocker's don't fall off for no reason. Best way to find out is to do a compression test. If the compression is good in that cylinder then you will just have to put the rocker arm back on and fire her up.

I'd try to figure out the cause so it won't do it again. My prediction is you've lost all compression on that cylinder from the bent valve.
Ok I found a rocker fell off, no damage, how do I fix?
 

steve

DSM Wiseman
15,010
1,809
Feb 3, 2002
Boulder, Colorado
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