Considering that the cams are a 100% swap (no PCM issues or
timing)...i'm leaning towards the actual cam timing. You may want to
recheck it just to be safe.
- Bernd
-----Original Message-----
From: owner-dakota-truck@dakota-truck.net
[mailto:owner-dakota-truck@dakota-truck.net] On Behalf Of William H.
Hiatt III
Sent: Monday, September 02, 2002 11:00 PM
To: dakota-truck@dakota-truck.net
Subject: DML: Engine/HO Cams Help/Questions
With the help of Ed Halterman and Jerry we managed to install the cams
in our 4.7's this weekend. Whoever said it is a two hour job can eat
me.......
The cams went in good, and it's running smooth, but I do have the
following
questions:
1) If I just step on the gas (just punch it a little) I'll get a
rattle/clanking type sound coming from the engine. My father said it's
not pinging/valve clatter, but due to the larger lift and longer
duration, it's just some valve spring noise I'm hearing, which wouldn't
hurt anything.
2) Under WOT or a hard acceleration, at around 4000-4500RPM I get a
little "pop" (Which my father says sounds like a misfire). What could be
causing this?
I have a custom flash on the PCM (Timing is at 29 degress) and Autolite
5224's. Should i pull and clean/regap the plugs to help with the
misfire? What about the valve spring noise? I was originally thinking we
might've accidentally moved one of the cam sprokets over a tooth during
the install, but that means that bank would be off on the timing
considerably, and the engine wouldn't be running right..
Any advice would be appreciated!
Thanks
william
This archive was generated by hypermail 2b29 : Fri Jun 20 2003 - 12:05:19 EDT