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Old 08-09-2017, 08:50 PM   #11
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^^ x2
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Old 08-09-2017, 11:26 PM   #12
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Quote:
Originally Posted by Boozehero View Post
Blow-by is usually smoke coming out of the oil fill with the cap off.

You can rent/borrow a compression gauge from one of the parts supermarkets. They usually take a deposit and lend them to you.

Did this develop suddenly? Or was it over time?
And the spark plug is firing?
It might have developed slowly. I've gotten into the habit of driving this truck just the way it is. It's been getting me where I want to go.

I've had a "fail safe" mode issue for at least 2 years. Somehow I got this crazy idea like I was going to fix it, so I ordered a new distributor. After installing the new dist. the truck just ran worse, so I reinstalled the old one.

What certainly did develop suddenly has been my level of "give a dam." So, I'm paying closer attention.
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Old 08-12-2017, 10:28 AM   #13
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Geez. There are a lot of possibilities here. Spark reaching number five cylinder, but no fire on the fuel at all? That's unusual. Sounds weird, but if it were my truck I would try an oil change with a quart of Lucas Oil Treatment added. Maybe you should pull your valve cover and just have a look at what's going on with the upper end of the engine. Have someone crank the engine for you and see if everything is moving as it should. More details are probably needed here.

How many miles are on the engine? Has it had regular maintanance?
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Old 08-13-2017, 03:26 PM   #14
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Yes, lots of regular maintenance. No expense spared. It has about 225,000 miles.

My Sear compression gauge might have life left in it. I connected the gauge to my air compressor; it shows, and holds pressure. The culprit it probably the "valve core." That's like a tire valve stem core. Pulled it out and the spring was corroded away.

Back from store: have a new core and new o-rings.

Last edited by veesix; 08-13-2017 at 04:07 PM.
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Old 08-13-2017, 05:29 PM   #15
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Let the engine warm up and then pulled the coil wire.

Wow! This engine "diesels" for a long time. Is this normal?


Should probably never do that again...story to follow.

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Old 08-13-2017, 07:13 PM   #16
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Good compression in number 5 (100lbs.) Found 90lbs in number 1 and 6. Don't worry to much about the low number, the gauge is old and I just cobbled it together (it's probably reading low.)

Bought a new plug for #5. It's still missing.

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Old 08-13-2017, 10:42 PM   #17
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Or, maybe the engine is shot. Seems to have OK power and it doesn't burn oil. Spent all day goofing with the truck. It's a miracle I didn't destroy the engine, break all my tools, and burn the house down.

I did manage to at least accomplish an oil and filter change. Got it back together and taking the dog to the park.
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Old 08-14-2017, 08:17 AM   #18
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Might sound strange, but have you checked under your distributor cap to see the condition of the #5 contact? You didn't try cleaning the corrosion off the inside of the cap, did you? That never works. Makes things worse.
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Old 08-14-2017, 02:19 PM   #19
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I replaced the cap.

My Haynes manual says there's a "mark" for TDC on the inside of the distributor.

It says the rotor points to it at TDC. I checked but don't see a mark. Wheres the mark?

Last edited by veesix; 08-14-2017 at 02:24 PM.
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Old 08-14-2017, 02:47 PM   #20
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Quote:
Originally Posted by veesix View Post
Wow! This engine "diesels" for a long time. Is this normal?
What does that mean?

Sorry I can't be of more help. I really don't know.
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