It is slowly starting to come back. Have one cylinder firing all the
time, and one that does sometimes.
I was talking to a local boat shop today to get some more Carbon Guard
or Ring Free. They mentioned something that I had actually considered --
"washing" the cylinders and engine. Their cleaning setup for marine
engines is surprisingly like what I'm going to try.
You know the adapters that screw in the spark plug hole with an air line
to hold valves in place while changing the springs? Take one of those
and attach it with some rubber fuel injection hose to a high-pressure
electric fuel pump (in my case, a spare Bosch pump from my DeLorean).
Move the piston to BDC before the compression stroke, and install the
adapter. Attach a fuel filter to the intake end of the pump, and
immerse it in the solvent (which will be kerosene and '5-Minute Motor
Flush'). Drain the oil, and remove the plug. Jam/thread a hose into the
drain hole, leading back to the wash basin. Hooking up the pump to the
battery (5 amps) will start the fluid flow. It flows 25 GPH at 80 PSI.
As such, it will thin out and wash all carbon, sludge, and goo in the
combustion chamber down past each of the rings in sequence, finally
draining into the pan and then back into the basin for filtering and
reuse. I'm figuring 20-30 minutes per cylinder (thus 12 gallons or so)
will wash anything out that's going to come out. A lot more will come
out after it's running and has the intense heat. Oh, and no, I won't
forget to lube up the cylinders with plenty of 90-weight before I try to
start her up!
The boat shop uses something quite similar -- an adapted saltwater bilge
pump and a drain pan for a sump. They use straight kerosene, and also
flush through the valve covers as well to get rid of the junk. Not a
bad idea, and I'll probably pull the distributor and "wash" that area as
well.
That's going to be the last thing I try before pulling the engine. I'll
probably have it tanked, and do new bearings all around. Basic rebuild
-- just a hone if the cylinders are okay, and new rings, replace worn
components, maybe new cam and lifters.
-Dave
|
|
Back to the Home of the Forward Look Network