Strange noise

[ZanettiZA]

After setting my cam timing a new noise that has developed...

It's quite difficult to describe but sounds like a deep pressure sound not a metal sound at all.

I have checked the valve position in relation to piston position in all the cylinders and it's 100%

I found that it only happens on the cylinder that has just fired - the rotor is touching the contact point in the distributor cap.

Yes the firing order is correct as well!

I removed the ht leads and she cranks fine!


Any ideas? Of course she doesn't start!

[Andrea Nistri]

The distributor might have been replaced in the wrong position. You should work your timing (cams and ignition) on #4. Andrea

[Ed Levin]

With a "deep pressure sound". could you actually be 180 degrees out?

[ZanettiZA]

Seems to have been the rotor, at closer inspection it wasn't fitting very well inside the cap for some strange reason anyway I have a spare which replaced it with and all is well!

When I did the cam timing I turned the engine to TDC on #1 compression, put some tape on the outside of the distributor cap where #1 is and lined them up as a starting point.

Is there a replacement cap that can be purchased new? Apart of course from installing an electronic ignition.