what makes you think a third thread about the same issue is gonna get your questions asked?

https://www.yotatech.com/forums/f120...gasket-221503/

https://www.yotatech.com/forums/f116...-shake-221961/

FYI, people are alot less likely to help someone out that does stuff like this.

 

Threads merged. Please do NOT start another thread on this topic. Post your continued questions on this thread.

Thanks.

:wabbit2:

 

Yea sorry, I'm not to savvy with how these sites work..No harm intended..

 

>>>*You could have a coolant leak, except to cause a misfire and low idle it normally requires a noticeable amount.

By noticeable, the coolant level will drop and require periodic refill. If it doesn't, it isn't a leaking head gasket. Good compression also suggests she hasn't failed also.

Possible sticky valve but I don't think so. That normally demonstrates as a loud noise and big cloud of smoke if you keep running her that way. Bad valves stay bad, and compression is good so I would discount that.

Now the serious shaking can be simply from the low idle, most engines get unhappy when they are running too slow.

Mostly when hot? After a short cooldown period? Low idle speed, that clears up by blipping the throttle?

Doing a bit of a reach, it could be as simple as an air bubble trapped in the system. Picking up the idle speed draws coolant past the air pocket and the system then settles down. When cold, there is no effect so she runs normally.

This has been fairly common, we have gone so far as to install a bleeder valve in the high point of the heater hose, or start the engine cold with the radiator cap off, and the front end jacked up in the air. The air pocket clears and we add more coolant to completely fill the system.

Coolant air pockets can cause all sorts of driveability issues, so worth a try.. Worst that can happen is it doesn't help.

One note here. When an air pocket gets trapped in the system, it can create hot spots. This means pinging, hesitation, and failed head gaskets if a large enough bubble. I have seen some of these systems take nearly another two quarts after jacking up the front end. Then oddly, some don't take any at all?......*EB

 

make another thread this one isnt working for ya!

 

just rev up the engine sounds like its just having a bit of miss fire... its not like your drivng miss daisy...

i got 236 on my truck.. not really sure about the engine... anymore.. but i have problems like that every once in a while.. and i just put my foot in the throttle and it will clear it up.

i say dont fix it until it wont run anymore... just put your foot on the gas pedal..

or tighten up your throttle cable.. to achive your low idle..