Another ticking question

Re: Another ticking question

Sorry, my piece of PVC pipe doesn't extend that long.... I have no idea what the sound is, as only you can hear it... A known noise on those engine is the gudgeon pins. That get a bit sloppy in the pistons, and will make a ticking/knocking sound.... But as I said, only you can hear it... we can only guess.

Chris.........

Re: Another ticking question

could be a spark jumping from a bad plug wire...

Re: Another ticking question

arnoldclan said:

could be a spark jumping from a bad plug wire...

Click to expand...

Just did a tune up including the wires

Re: Another ticking question

Could just be a noisy/loose rocker arm. The easiest way to check/adjust them on this motor(which I also have) is while it's running.
Run it for a couple of minutes, remove the rocker/valve cover.
Get a 5/8" socket, an extension, and a 1/2" drive.
Start the engine and let it idle.
Starting at cylinder#1, SLOWLY back off the first rocker nut until it clatters a little.
SLOWLY tighten it until there is no sound...this is "zero" lash. You'll be able to "feel" it through the socket wrench also
SLOWLY tighten it 1/4 turn...the engine may bog a little, but don't worry this will clear.
Repeat this another 11 times.
NOW...Return to #1 and simply SLOWLY give each nut another 1/4 turn(1/2 total on each).

Once you get going, it actually takes just a couple of minutes.

The manual says 3/4 turn, but my WELL seasoned professional engine builder(just rebuilt my cylinder head) has built many of these 250's and told me that on this engine 1/2 turn will center the lifter without worry of over tightening.

There will be a little oil to clean up, but it's not that bad...a couple of rags and you're done.

Go to the local NAPA/AZ...whatever, buy a GOOD valve cover gasket...replace and tighten to 4lbs.

Done. Silence at last!

Re: Another ticking question

Oshkosh1 said:

The manual says 3/4 turn, but my WELL seasoned professional engine builder(just rebuilt my cylinder head) as built many of these 250's and told me that on this engine 1/2 turn will center the lifter without worry of over tightening.

There will be a little oil to clean up, but it's not that bad...a couple of rags and you're done.

Go to the local NAPA/AZ...whatever, buy a GOOD valve cover gasket...replace and tighten to 4lbs.

Done. Silence at last!

Click to expand...

Excellent. Not sure if the original owner ever did this, but I sure have not. So now I know what I am doing tomorrow. This and the oil change. Thanks for the bit of advice OshKosh !