i have a 95 silverado z71, 5.7 liter. a while ago i had a stalling problem,
it was cured by changing a part under my air cleaner.(i didn't do the work
so i don't know what it was.) when it was change the distributor had to be
loosened. timing was reset. now my motor is knocking worse than ever. I
thought the computer should adjust the timing itself, provided its not set
too far off, and i thought these trucks have an anti-knock sensor. any help
would be appreciated.
You need to verify that the timing was set correctly. There is a special
proceudre to set timing on these vehicles. The computer can control for
knockm but only up to a certain point.
If timing is ok, it's either:
1) failing fuel pump
2) plugged fuel filter
3) bad injector<s>
4) 02 sensor
sorry, yes the knocking is fixed.
on a side note i have this ticking sound. my intake gasket was changed when
it started. i was told that my number 1 lifter is sticking and it is not a
result of the gasket being changed. if it really is the lifter is there a
easy way to get unstuck?? it is very noticeable when the motor is first
started then it quiets when the oil starts flowing, but its still there.
You could try dumping a can of engine flush in there, run it for ten minutes
or so, change the filter and refill with synthetic. If it's gunked up, the
flush and synthetic should take care of it. If it doesn't, time for some
I've also heard that by replacing one quart of your motor oil with a quart
of ATF will also clean varnished lifters. I've never tried it though.
Motor flush scares me, had a bad experience with it. I left it in too long
and the oil pump screen got clogged with all the crap from the motor that
the motor flush released. But that was probably due to operator error! ;-)
I think we've all had attacks of Polish!
Even after 35 or more years of experience. If a pint works, why not use two?
Don't feel bad, been there, done that. There's no shame in making a mistake.
Not learning from them is the shame!
i'm going to use sea foam. i already treated my fuel but the can does not
say how to treat the oil, it does however say how much to use. should i
leave it in for a whole oil cycle or is it like the flush where it should
only be left in for 10 min?
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