[urq] Rod Knock?

fdekat fdekat at sentex.net
Thu May 19 09:59:02 EDT 2005


Looks like one less urq at Carlisle..!

So here I am last night, zipping down the highway on the way to my friend's
shop, to replace a broken subframe bolt. (That broke, when I was checking the
tightness of the subframe bolts, trying to find the 'creaking noise' that I
heard occasionally).

I hear a funny noise, so I back off. Stand on it again, noise comes back.
Ohoh! Not good!  Pull over, and pop the hood. Sounds OK idling, but maybe a
bit more 'lumpy' than normal. Give the throttle a quick crack, and a nasty
noise!

Sounds like the man with hammers is beatinig on the pistons. Very 'sharp'
metallic sound, similar to the 'pinging' sound you get when running WAY too
much advance.  Except this is happening just by giving the throttle a good
crack..

Drove it home very carefully. Noise would only happen under load, and seemed
to 'kind of, sort of' miss at the same time. Wouldn't take much load to get
this to happen.

However, at light load and more rev's, no noise.

I'm at a bit of a loss to figure this one out.
I'm thinking if it's a rod end, I'd be LESS likely to hear the noise under
load, and more likely to hear it as the motor is on overun. BUt then,
anything is possible, right?

I'm also wondering about the possiblilty that the ECU has gone wonky, and it
IS a case of massive advance?

When I get home tonight, I'll be checking with the timing light, and maybe
the 'pull one plug at a time' teast, to see if it's one cylnder doing this
(Which is what it sounds like).

Or maybe it's something stupid, like the flywheel coming loose? Anyone ever
have that happen? From the general condition of the urq when I got it, I'd
beleive ANYTHING is possible..!

So, If you have any ideas let me know. IF it's not an easy fix, it's the
4000q to Carlisle. Not as much fun, but way more reliable!

Rgards,

=Frank de Kat=


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