Reproduction Parts for 1916-1964 Chevrolet Passenger Cars & 1918-1987 Chevrolet & GMC Trucks



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#483666 07/23/23 07:08 PM
Joined: Oct 2017
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Shade Tree Mechanic
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Shade Tree Mechanic
Joined: Oct 2017
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A friend of mine has a four cylinder 1927 Chev that has no oil pressure. It runs smoothly and no knocks. Any suggestions on what might be wrong?
Thanks Mike McDonald

Filling Station - Chevrolet & GMC Reproduction Parts


Filling Station


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ChatMaster - 3,000
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I recently had a similar situation with the '28 engine in my truck Lurch.

The problem was that the distributor worked its way 'up' out of the hole in the block and therefore disengaged from the top of the oil pump.

I suspect that the last time I checked the timing of the distributor, I did not tighten down the clamp well enough to keep the distributor down in the hole in the block.

After seating the distributor so that it engaged the oil pump again, I the oil pressure came back.

Dean


Dean 'Rustoholic' Meltz
old and ugly is beautiful!



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Shade Tree Mechanic
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Shade Tree Mechanic
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Thanks. I will have him check that out. Hopefully that is what it is.

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BTW, without taking the distributor out (so the timing stays good), I used the following process to seat the distributor:

1. Loosen the distributor clamp, but do not lift the distributor
2. Very slowly, turn the engine a tiny bit with a hand crank
3. Check to see if the distributor will slide down and engage the oil pump.
4. Repeat steps 2 and 3 until the distributor slides down around 3/8 inch.
5. Tighten up the distributor clamp (and I mean tight!).

Hope this does it for him.
Dean


Dean 'Rustoholic' Meltz
old and ugly is beautiful!



Joined: Oct 2017
Posts: 100
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Shade Tree Mechanic
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Shade Tree Mechanic
Joined: Oct 2017
Posts: 100
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Thanks Dean. Great help. They are going to take a look at it tomorrow. Mike

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Let us know what solves the problem. The more solutions we document in the forums, the easier it is for future enthusiasts to find the information they need.

Cheers, Dean


Dean 'Rustoholic' Meltz
old and ugly is beautiful!



Joined: Oct 2017
Posts: 100
Likes: 1
Shade Tree Mechanic
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Shade Tree Mechanic
Joined: Oct 2017
Posts: 100
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Dean. Great information. This solved the problem and saved a lot of time. Thanks again for all your help. Mike McDonald


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