Valve noise - I think?

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s147881
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Valve noise - I think?

Post by s147881 » April 20th, 2015, 6:39 pm

While driving my aa truck last week there seemed to be some valve train noise when engine was turning higher RPMs. Can you adjust the valves without removing head? I used straight 30 weight oil - should I have added something heaver?

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Farrell In Vancouver
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Re: Valve noise - I think?

Post by Farrell In Vancouver » April 21st, 2015, 10:25 am

Can you describe the noise better?
How much advance were you using (Spark knock-Ping)?

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s147881
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Re: Valve noise - I think?

Post by s147881 » April 24th, 2015, 6:04 am

I drove the truck 20 miles yesterday and believe it was spark knock. Advancing the timing corrected most of the noise. Before we left we added one quart of oil and drove around 12 miles to ball game with minor oil leakage. On the way home I decided to open it up and drove home at 45 mph. When I pulled into the garage oil was running down from engine and left in drive way was a path of oil drops. It looks like I have some significant blow by at high RPMs. I put new rings in it when I had the engine out. Is there a good fix for the oil leakage while I wait for the rings to seat?

ModelAkid
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Re: Valve noise - I think?

Post by ModelAkid » April 24th, 2015, 8:04 am

You didn't say the location of the oil leak. Could be blowing out filler tube, front or rear main seals, bad gasket somewhere? The fix will depend on where the leak is.
BTW overfilling crankcase oil is never a good idea with any engine. If you overfilled it, bring it down to the correct level, then see where it may be leaking.

Bob C
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Re: Valve noise - I think?

Post by Bob C » April 24th, 2015, 8:07 am

If it was spark knock I would think advancing the timing would only make it worse. Where is
the oil coming from, the breather or the rear main?

Bob

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spectria
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Re: Valve noise - I think?

Post by spectria » April 24th, 2015, 2:03 pm

s147881 wrote:I drove the truck 20 miles yesterday and believe it was spark knock. Advancing the timing corrected most of the noise. Before we left we added one quart of oil and drove around 12 miles to ball game with minor oil leakage. On the way home I decided to open it up and drove home at 45 mph. When I pulled into the garage oil was running down from engine and left in drive way was a path of oil drops. It looks like I have some significant blow by at high RPMs. I put new rings in it when I had the engine out. Is there a good fix for the oil leakage while I wait for the rings to seat?
Did you follow any loading procedure to help break in the rings? Who honed the cylinders, pattern, cleaning the abrasive out after?
Dave in Quincy, Ca. I love Pics!!!! Post them All!!! :)
Join the Ford Model AA Truck Club - membership form at http://www.fmaatc.org

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BrianT
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Re: Valve noise - I think?

Post by BrianT » April 24th, 2015, 9:23 pm

It sound like a classic case of being over filled with oil, possibly the wrong dipstick, or the fill cap pushed down to far, if you do not see a lot of blue smoke coming from the fill tube when running then I would say the rings are ok.

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s147881
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Re: Valve noise - I think?

Post by s147881 » April 25th, 2015, 5:42 am

Did some checking yesterday and found the baffles in the filler tube bent allowing straight shot of oil splashing out. Crank case was 3 quarts low after just 20 miles. There was no pressure coming out of tube but oil was splashing out. I had some help from a friend - thanks Stu. I was also able to correct my idle issue by bending the throttle arm on the fire wall. What's the best way to get the filler tube out?

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Chris Haynes
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Re: Valve noise - I think?

Post by Chris Haynes » April 25th, 2015, 5:26 pm

I put a metal "Chore Girl" pot scrubber in my breather tube. It really helps capture oil mist coming out the breather tube. When adding oil it pours right through it.

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Re: Valve noise - I think?

Post by ModelAkid » April 25th, 2015, 6:49 pm

"What's the best way to get the filler tube out?"
You just pull it out with your hand. Give it a little back-n-forth while pulling to loosen it.
Henry recognized the problem of oil splashing out the filler tube and kept redesigning the baffles to be more effective. I think there are 4 different versions. I'm sure many AA-ers here have some extras if you need one.

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