Rough Engine, please help

Ok Roger, Thanks. I'll see if we can get together soon to check that
out. How do you check the cam-- pull the rocker arms, pushrods, and
lifters, and peek into the hole where the lifters were?

Thanks,
John Clonts
Temple, Texas
N7NZ


"Roger Long" om wrote in message . ..
I repeat. Make that next flight after the entire valve train has been
checked. Just the broken spring could have caused other damage that will
come back to bite you. I've been talking to another guy who had the lifters
in his 210 go bad just under 700 hours even without any broken valve
springs.

The cam shaft is driven directly by the engine and, when things go wrong in
the rather delicate valve train, all that power can really screw things up.
--
Roger Long

John Clonts wrote in message
m...
"Jay Honeck" wrote in message
news:pygZb.224397$U%5.1418539@attbi_s03...
Thanks for the replies. It WAS the fuel injector, which was blocked.

Good deal, John.

Any idea what caused the clogged injector? Bad gas?

Good question!

My mechanic posited that the broken valve spring somehow facilitated
the clogging of the injector. I'm not sure I can see that...

Also, it's kinda hard to resolve the "intermittent" nature of the
problem from flight to flight beginning a month or so ago, i.e. "When
did the valve spring break?", and "When did the injector clog-- and
was it suddenly, or gradually?".

I will be pondering these things during my next few flights!

Cheers,
John Clonts
Temple, Texas
N7NZ

Speaking of which, Jay... did you ever swap your Grape's fuel filter and
cut
open the old one? I ended up rigging a funky plumbing concoction with
water-absorbing
spin-on filter for refueling from 6 gallon cans.

I swapped the fuel filter -- but it was too danged cold at the hangar to cut
the thing open.

Next one is due to be swapped soon. With the warmer weather, I'll cut this
one, although I don't expect to find much. (Pretty new tank on the Grape
plus brand new tank at the gas station should -- I hope -- equal pretty
clean gas...)

It'll be interesting to see what is being caught.
--
Jay Honeck
Iowa City, IA
Pathfinder N56993
www.AlexisParkInn.com
"Your Aviation Destination"

Jay Honeck wrote:
: It'll be interesting to see what is being caught.

That's why I rigged in my filter. Before that, I always saw a very small
amount of brownish water (about 1/4 teaspoon) in each tank on every sump check. Also
trace amounts of very fine flakes (rust?). I *never* saw any of it that made it
into the gascolator.

Now with the water-absorbing filter spout, I only get a trace amount of water
if it's condensed in the tanks (if not flown for a few weeks). No debris at all.
Much more reassuring.

-Cory



--
************************************************** ***********************
* The prime directive of Linux: *
* - learn what you don't know, *
* - teach what you do. *
* (Just my 20 USm$) *
************************************************** ***********************

"Jay Honeck" writes:


Next one is due to be swapped soon. With the warmer weather, I'll cut this
one, although I don't expect to find much. (Pretty new tank on the Grape
plus brand new tank at the gas station should -- I hope -- equal pretty
clean gas...)


ROTFL....

The dirt arrives in the tanker just the way the gas does....


--
A host is a host from coast to
& no one will talk to a host that's close........[v].(301) 56-LINUX
Unless the host (that isn't close).........................pob 1433
is busy, hung or dead....................................20915-1433

John Clonts wrote:

Thanks for the replies. It WAS the fuel injector, which was blocked.



Man, did you dodge a bullet. Congrats.

Last week, I finally got my Comanche back from maintenance, and what
started out as an annual last July, with the engine seeming to run fine.

It turned into a major overhaul, when it was discovered that my #5
cylinder had problems, and it turned out the cam lobes were worn past
airworthiness. Labor to correct that was equal to labor to major. I
majored.

It's a crapshoot.