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In case anyone was interested to know what's down that hole where the cutoff solenoid/valves go... pic attached

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I did a 'leak down' check and it showed about 5-10 percent leakage which is supposed to be good.


Mike

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I've since pulled the failed cutoff solenoid out. The brass end with the actual valve was totally broken off the end. So I've just sealed the hole with an M8x1.0 bolt. Hmmm, now that's got me thinking. I wonder if that broken off end is lodged down inside there(??) Time to get out the borescope. I'l...

Also... I am seeing raw fuel being spit out the exhaust pipe. Just enough to see little spots hit the pavement. It's intermittent though. What I am noticing is that when I disconnect the plug wires one at a time while running, there is a noticeable drop in rpm on each cylinder as expected, EXCEPT fo...

Inspected the vacuum lines/connections and they appear good (at least what I could get to) I put a guage on it and I am pulling about 20 inches HG at idle. Under the tins, the carb balance hose looks to be intact and tight. My 710 is not set up for the "automatic hot air regulation". There...

Ok roger that. Sounds like an interesting idea. Now on to inspect the vacuum lines...

Thanks!


Mike

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Heres a pic of one of the plugs. All four were virtually identical.


Mike

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Update: Looked at all four sparkplugs and they all appear equally the same with no significant 'wetness' or oil. IMO they looked pretty normal. (but then I could be wrong) But I did discover the #1, or forward most shutoff solenoid to be bad/broken. I hoping that will be the reason for my troubles b...

I have been noticing white/grey exhaust smoke at random times at idle. Varies. Most of the time no smoke at all, then for some reason at a stop it starts smoking. Otherwise it seems to be running fine with good acceleration and no funny noises. I'll be pulling the plugs and having a look this weeken...

The numbers were in ppm. I failed both at idle and at speed on the rollers.

Idle standard is 350 and I read 1384.
Running standard is 300 and I read 521.

Mike

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I normally pass emissions without too much fuss, but this time
it failed due to high hydrocarbons. Carbon monoxide was fine.

Wondering where I should focus my attention to make any adjustments.

Thanks...


Mike

I know you're focusing on it being an electrical/ignition problem, but
are you sure it's getting fuel?

Just my .02 cents

Thanks Paul. That sounds familiar now.


Mike

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I need to bleed the brakes on my 710K and I cant remember the order, or sequence
of which wheel to do first, second... last.

Can someone remind me?

Thanks much...

Mike
Tucson, AZ

Hello,

Wondering if anyone has a spare clear lens for the license plate lamp.



Thanks,

Mike