Oil in Distributor - JeepForum.com
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post #1 of 55 Old 02-04-2021, 06:15 PM Thread Starter
michael72
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Oil in Distributor

Hello,

I overfilled my oil and feel pretty silly about it.

Discovered the problem when oil was leaking out of the dipstick after she was warm, I did not drive it.

Got the oil to the proper level.

Plugs were fouled and I found oil in my distributor.

There was a light coating on the inside of the cap but enough had moved around in there to cause it to be noticeable from the cap vent and a very small amount collected in the base.

Replaced the plugs.

Cleaned the distributor and inside of the cap with electronics cleaner, cotton swabs, and compressed air.

She started right up and ran until warm.

I shut her down and could not get her restarted.

Plugs are ok.

I am going to pull the cap off and clean everything up again tomorrow.

If she starts, runs, and won't start again, my instinct is that I blew the o-ring in the distributor.

Am I on to the right thing here?

Should I rebuild or replace if it is the o-ring?

I am running an MSD 8516.


Thank you,

Michael
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post #2 of 55 Old 02-04-2021, 08:15 PM
LumpyGrits
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Replace your PCV valve

Have'n you along, is like loose'n 2 good men
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post #3 of 55 Old 02-04-2021, 09:45 PM Thread Starter
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I will pick one up tomorrow and report back. Big time thank you.

Thank you,

Michael
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post #4 of 55 Old 02-04-2021, 11:07 PM
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Quote:
If she starts, runs, and won't start again, my instinct is that I blew the o-ring in the distributor.
Check for spark?
Fuel?
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post #5 of 55 Old 02-05-2021, 11:16 AM Thread Starter
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Geeze Louise am I feeling sillier by the moment but this site is about learning.

Going to get a new PCV and a thought crossed my mind about a different potential problem.

I have a flexible pipe attached to my exhaust and then attached to a shop fan on high. Could this be causing a problem? Back pressure or something?

I am still going to replace the PCV and clean the distributor again before I try to start her again.

Thank you,

Michael
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post #6 of 55 Old 02-05-2021, 03:47 PM Thread Starter
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Quote:
Originally Posted by jeepdaddy2000 View Post
Check for spark?
Fuel?
The PCV is good, tested for spark, good.

Not getting fuel into the carburetor. Pulled the inlet hose on the barb and I get fuel when it turns over. When reconnected, no fuel coming out of the jets.

I sprayed some carb cleaner into the carb and inlet barb. No cleaner came out of the jets when I sprayed it into the barb.

No start.

Is it possible that the oil issue did this to the carburetor?

If so, any tips for cleaning it before I rebuild it?

I have a Weber 38DGAS.

By the way, the fan theory did not work. I had to ask.

Thank you,

Michael
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post #7 of 55 Old 02-05-2021, 04:10 PM
JEEPFELLER
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Maybe a shot of starter fluid down thru the carb?

----JEEPFELLER
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post #8 of 55 Old 02-05-2021, 06:22 PM
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Quote:
Originally Posted by michael72 View Post
The PCV is good, tested for spark, good.

Not getting fuel into the carburetor. Pulled the inlet hose on the barb and I get fuel when it turns over. When reconnected, no fuel coming out of the jets.

I sprayed some carb cleaner into the carb and inlet barb. No cleaner came out of the jets when I sprayed it into the barb.

No start.

Is it possible that the oil issue did this to the carburetor?

If so, any tips for cleaning it before I rebuild it?

I have a Weber 38DGAS.

By the way, the fan theory did not work. I had to ask.
I think it's more likely the oil damaged the mechanical fuel pump.
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post #9 of 55 Old 02-05-2021, 06:38 PM Thread Starter
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I tried starter fluid, no dice.

If I pull the fuel line off of the carburetor and turn the key, fuel is coming out.

I think that means that the fuel pump is working.

I cannot see anything coming out of the jets in the carburetor, no fuel when the line is connected and the engine is turned over, no carb cleaner when I spray it into the inlet barb with the fuel line disconnected.

Can the oil have caused this problem?

Thank you,

Michael

Last edited by michael72; 02-05-2021 at 06:39 PM. Reason: Format
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post #10 of 55 Old 02-05-2021, 06:44 PM
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Forget the oil in the distributor for now.


You won't see fuel out of the jets. What you want to do is pump the throttle and observe to see if there is fuel squirting out of the accelerator pump nozzle.
If so then you have fuel as well. If not, you may need to pop the carb lid and see if the needle valve is stuck or an obstruction in the inlet. You also want to see if there is fuel in the float bowl.


If you have fuel and spark, then you may be looking at a flooded situation, both the cylinders and plugs.
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post #11 of 55 Old 02-05-2021, 06:57 PM Thread Starter
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Quote:
Originally Posted by JEEPFELLER View Post
Maybe a shot of starter fluid down thru the carb?

----JEEPFELLER
Quote:
Originally Posted by Anotherusername View Post
I think it's more likely the oil damaged the mechanical fuel pump.
Quote:
Originally Posted by jeepdaddy2000 View Post
Forget the oil in the distributor for now.


You won't see fuel out of the jets. What you want to do is pump the throttle and observe to see if there is fuel squirting out of the accelerator pump nozzle.
If so then you have fuel as well. If not, you may need to pop the carb lid and see if the needle valve is stuck or an obstruction in the inlet. You also want to see if there is fuel in the float bowl.


If you have fuel and spark, then you may be looking at a flooded situation, both the cylinders and plugs.
Thank you.

That make sense.

I think that I have ruled out the distributor now.

Going to do Friday night stuff and hope to get back to it tomorrow.

I really appreciate this.

Thank you,

Michael
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post #12 of 55 Old 02-07-2021, 07:49 PM
JEEPFELLER
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SPARK?

Several ways to test for it.

This seems to be the accepted old time way.

I used to pull a plug to perform this test-----then it struck me, pull the wire off, and use a old/ or on hand plug for the test. A "same kind" plug will show the correct spark (I found that other plugs for other rigs may show weaker sparks).....Moral? Buy an extra plug, so if you ever break one, or you need it for this test!
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post #13 of 55 Old 02-07-2021, 08:31 PM
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I'm thinking ignition,

My test above will show what to look at next

With no spark, these are a few possibilities.

Wires loose

Bad ignition module

Bad coil

etc.

For me, the module or coil would be an EZ test/ or even fix----I keep spares of a lot of items, the coil, module, and the fuel pump have left me stranded in the past (over years-in other CJ-5s)So I keep them and tools on board all of the time. Luckily it's been a while for me, but I have helped a couple of other CJs in need of a fuel pump, the other with a module.

----JEEPFELLER
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post #14 of 55 Old 02-08-2021, 12:28 PM Thread Starter
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JEEPFELLER,

I tested for spark and am good to go.

Jeepdaddy2000 recommended that I take a look around inside of the carburetor.

After a few epic battles with the Carter BBD, I replaced it with the Weber about 18 months ago.

Since I haven't had any problems with it, I don't know the insides yet and am going to take my time to do some learning.

I am going to see what is going inside of the carburetor tonight and let you know.

Thank you,

Michael

Last edited by michael72; 02-08-2021 at 12:28 PM. Reason: Spelling
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post #15 of 55 Old 02-08-2021, 04:42 PM Thread Starter
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Pulled the top off of the carburetor.

Didn't see any glaring obstructions.

Cycled the accelerator diaphragm, I did see bubbles in the fuel.

Cleaned whatever I could.

Great diagram for a Weber 38.: https://www.carburetion.com/diags/38DGASDiaginfo.asp

Put it back together and am now getting fuel coming out of the "Air Corrector Jet?" (# 94 on the diagram) and splashing out.

I have three theories:

1: There was an obstruction that I cleared and then put the carburetor back together incorrectly.

2: There was an obstruction that I cleared but the fuel pump was damaged when the oil was overfilled and is putting out the incorrect pressure. I went and picked one up if I decide to get after this again tonight.

3: I pulled the carburetor and put it on the shelf for six months. Could residual gas have caused a problem?

Thoughts or advice would be much appreciated.
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IMG_20210208_154950428.jpg   IMG_20210208_155002543.jpg   IMG_20210208_165634284.jpg  

Thank you,

Michael
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