1974 Chevy Impala will not start when wet. Starter or distr

Tiny
FORD350
  • MEMBER
  • 1974 CHEVROLET IMPALA
  • V8
  • 2WD
  • AUTOMATIC
  • 45,000 MILES
I have installed the Ignitor last year. 1974 Chev 350 in my 1941 Ford Sedan Delivery street rod.
All was/is OK but not sure. I travled a lot with it in and it has great response and starts good altho I do think the gas mileage has dropped!
I have had this other problem 4 times now. Twice last weekend at a car show in MI. 4 days and I do not think it stopped raining at all.
Well when it rains while the rod is sitting and it gets wet under the hood, louvered hood, when I go to start the engine it acts like it is totally off time and will not turn over completly, it like locks up and makes a Loud noise while the starter engages and tries to rotate the engine.
I can bump the starter a little at a time and after a while it does start to turn over more and eventually starts.
After that start all is well. I can turn it off and start it right up, no problem.
I bought a tarp at a hardware store and the rest of the weekend I covered the engine and no further problems.
I also have another intermitent problem, engine stops running like it is out of gas. 4 times when I was below 1/4 tank and I found out I could restart it and go on. So I blamed it on a bad fuel pick up in the gas tank. On the way home from MI. It stopped while leaving the toll booth with 3/4 tank of gas. I was able to limp to the side of the road. Again I was able to re start it and travel the 70 miles home. I just remembered though that did happen on 2 road trips and killed on the express was at highway speeds. I coasted to the side of the road and gather my senses and then tried to start it and it started right up and I was on my way.
I know lots of problems here but I just want to mention them as they ar all intermitent and who knows if they are related. I do not think. Well I do not know for sure what to think.
Can you help?
Sincerely,
Don in WI. NSRA
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Thursday, September 18th, 2008 AT 7:18 PM

3 Replies

Tiny
JACK42
  • MEMBER
FIrst of all. Are the hood louvers right over the intake and what kind of induction do you have? It almost sounds liek water is getting into the engine, and causing a hydro-static lock, thatis why you can bump the motor around to clear the water and it will start, but if you try to just crank it, it cant compress the fluid. Stalling problems also sound like they could be water contamination, but in the carb. The stalling will be hard to find since it starts right back up.
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Friday, September 19th, 2008 AT 8:12 AM
Tiny
FORD350
  • MEMBER
Yes the louvers are over the distributor and the carb.
I have a Edelbrock air cleaner with a K & N air filter. I have a generic knob on top of the Edelbrock and I was just thinking that the top does get quite wet along with the distributor.
I think that would be the only way water would get in to the carb. now that I think of it.
Would the open air filter be able to allow water in to the carb.?
Also how much water does it take to make this Hydro-static lock?
Thanks for your help,
Don


http://www.2carpros.com/forum/automotive_pictures/244084_Edlebrok_side_view_1.jpg



http://www.2carpros.com/forum/automotive_pictures/244084_Day_1_Dons_1941_with_the_Pecos_River_Texas_gorge_2006_059_1.jpg

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Friday, September 19th, 2008 AT 10:07 AM
Tiny
JACK42
  • MEMBER
Doesnt take very much. Next time it happens, pull the plugs and bump it around to see if there is water in the cylinders
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Friday, September 19th, 2008 AT 11:01 AM

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