One more time

Reply Subscribe

Thread Tools

Search this Thread

Jul 28, 2020 | 01:58 PM

#16

bmoran4

Parts Nerd Extraordinaire

Joined: Sep 2010

Posts: 4,384

Likes: 1,793

From: Western NY

Quote:

Originally Posted by ynot321AB1

I realize that I now have to rebuild it, thanks for all the help

Just curious, how did you come to that conclusion? What did you find?

Jul 28, 2020 | 04:30 PM

#17

ynot321AB1

Thread Starter

Tuned

Joined: Dec 2017

Posts: 353

Likes: 6

From: Arkansas

Well if I am not getting any compression either the rings are stuck or broken. I got some mystic oil and put some in each cylinder and will try it tomorrow. Maybe the oil will unstick the rings but I dought it. If not overhaul time.

Jul 28, 2020 | 04:38 PM

#18

ALBUQ F-1

Fleet Owner

Joined: Jul 2004

Posts: 27,300

Likes: 1,059

From: NM

Stuck rings won't give zero compression, that is a sign of open valves. I would pull the manifold and check them. An hour's work.

Jul 28, 2020 | 04:40 PM

#19

AllenV

Tuned

Joined: May 2020

Posts: 336

Likes: 56

From: Rio Grande Valley, NM

A leak-down test may be informative.

Jul 28, 2020 | 05:03 PM

#20

allout5151

Tuned

Joined: Jul 2019

Posts: 250

Likes: 16

From: Vancouver Island, BC

You said it ran in the past. Just out of curiosity, when was the last time it ran and how well did it run?

Jul 28, 2020 | 06:43 PM

#21

ynot321AB1

Thread Starter

Tuned

Joined: Dec 2017

Posts: 353

Likes: 6

From: Arkansas

That shows you what I know, will check and advise

Jul 30, 2020 | 03:12 PM

#22

ynot321AB1

Thread Starter

Tuned

Joined: Dec 2017

Posts: 353

Likes: 6

From: Arkansas

Finally found some time to take off the intake and found as you said half of the valves are not moving. Take blastit and spray them??

Jul 30, 2020 | 07:54 PM

#23

ALBUQ F-1

Fleet Owner

Joined: Jul 2004

Posts: 27,300

Likes: 1,059

From: NM

Any good penetrating oil will work, spray it all over the valve stems, lifters, and as much of the guides as you can. After a soaking and letting them sit a day or so, try prying them down. Then rotate the crank a few times, see if there is any improvement. Repeat as necessary.