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Username Post: Won't start won't run in rain or moisture        (Topic#347844)
K10Matthews 
Forum Newbie
Posts: 14

Loc: Pennsylvania
Reg: 01-18-17
10-23-17 07:16 PM - Post#2711886    

I have a 1985 k10 with a 350 and I've been having problems with it running or even starting when it's wet or raining. The only thing I can think of is that there's water getting on the starter and up in the distributor cap. Any input would be really appreciated. thank you

1985 K10


 
LMC Truck
elcamino 
Dedicated Enthusiast
Posts: 5319
elcamino
Loc: Lake Superior-Michigan US...
Reg: 03-30-00
10-24-17 02:29 AM - Post#2711908    
    In response to K10Matthews

Moisture is penetrating the ignition wires etc.

We had a truck (DOT survey crew F150) at work that did this. As a last ditch effort to get it started wet/damp day we followed advice of a local mechanic and sprayed the spark plug wires, distributor cap etc with WD40 and it started right up. The WD40 displaced the moisture that was preventing it from starting. Note-Any similar product will work just as well, the mechanic just happened to have a can of WD40 to loan us.

If it starts up after doing this your ignition parts are bad; spark plug wires, coil/coil wire, distributor cap/rotor, battery cables/ground cable etc.

Mike
2017 GMC Sierra Denali Ultimate 6.2L(420hp)/8-sp
2016 Polaris RZR 900 EPS


 
gchemist 
Senior Chevytalk Moderator
Posts: 24202
gchemist
Loc: Austin, TX 78748
Reg: 05-09-00
10-24-17 03:36 AM - Post#2711915    
    In response to elcamino

Yup, moister on ignition parts are not good. WD40 works great.

'95 Jimmy SLT (Bought @131,814)
'83 Silverardo XST - ZZ4 powered
'96 GMC Jimmy LS Ret. @236651 miles


 
Keith Seymore 
Silver Supporting Member
Posts: 672
Keith Seymore
Loc: Southeast Michigan
Reg: 09-17-08
10-27-17 09:52 AM - Post#2712361    
    In response to elcamino

  • elcamino Said:
Moisture is penetrating the ignition wires etc.

We had a truck (DOT survey crew F150) at work that did this. As a last ditch effort to get it started wet/damp day we followed advice of a local mechanic and sprayed the spark plug wires, distributor cap etc with WD40 and it started right up. The WD40 displaced the moisture that was preventing it from starting. Note-Any similar product will work just as well, the mechanic just happened to have a can of WD40 to loan us.

If it starts up after doing this your ignition parts are bad; spark plug wires, coil/coil wire, distributor cap/rotor, battery cables/ground cable etc.



Yep yep, except in my case it was a '42 Farmall "A".

A spritz inside the distributor cap and it would fire right up (which wasn't trivial, since you would be cranking the thing by hand).

K


Chevelle Intro: http://www.popularhotrodding.com/features/1005phr_...
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grs 
Contributor
Posts: 125

Loc: Texas
Reg: 07-04-14
12-03-17 09:09 AM - Post#2716738    
    In response to K10Matthews

I had a 67 Lemans . It would not start when it was raining. When I got it running I sprayed the coil with water and it killed the engine. I replaced the coil an no more problem.
Get it running, and spray the ing parts, and see if you can find the problem.



 
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