Oh man...ouch! :(
Hope nothing got damaged.
- Bernd
> Thank you Bernd! You have perfect timing (no pun intended) for posting on
> this subject. I got my new motor in and everything, but when I ran it, it ran
> horrible, and was firing unused fuel out of the tailpipe! From your email I
> decided to check my timing, even though I was positive I didn't move anything
> when I did the timing chain swap.
> So I get everything and long a behold, it wasn't my fault! Turns out the
> idiot engine rebuilder put the timing chain on 180 degrees out of wack (both
> timing marks were facing up). So the injectors were firing on the power
> stroke instead of the intake stroke, and the exhaust stroke was firing raw
> fuel out of the engine (I shoulda figured this out on my own now that I think
> of it). I can't believe the thing ran at all (testimonial to the reliability
> of Magnum engines?). And of course in my boneheadedness I didn't check the
> timing marks when I changed to the double roller, I just "assumed" the
> rebuilder did it correctly. At any rate, I used the stock (unused and
> unstretched) timing chain to reset the camshaft. Because it was so far out of
> wack, I had valve/piston interference when I turned it 90 degrees, so I ended
> up having to pull the valve covers and loosen all the roller rockers. Got
> everything done correctly and readjusted all the RR's just in time to listen
> to the Met's triumphant (but one run short) rally in the 9th. I realigned the
> distributor which was now 180 degrees out as well, and finished putting the
> truck together. Nice to know you can't even rely on the professionals.
> On another note, I decided to check out the timing chain on the V6 just
> to see how much these stock chains really do stretch. With 84K on the stock
> timing chain, it had about 1/2" slack in it. This was the "shake it around
> with your fingers" test, not the test they actually recommend in the service
> manual so it may be within spec. Scary stuff.
>
> Austin
> Vipertruck
> >
> > After everything was put back together earlier tonight, she was ready to
> > fire up again. She cranked (rather strangley) a few time but fired
> > up...VERY rough idle and the engine sounded like a diesel engine. We
> > immediately shut her down and tore down the timing cover...just to check if
> > the timing marks weren't quite "dead-on". Yup, they're right on.
> > Hmmm...maybe they're off from the factory...
>
This archive was generated by hypermail 2b29 : Fri Jun 20 2003 - 11:56:20 EDT