68 427 won't start after winter storage
Thread Starter
Racer
Joined: Sep 2011
Posts: 444
Likes: 35
From: Michigan
68 427 won't start after winter storage
So I'm trying to start the car for the first time this spring and this is what I got so far..
-I've got fuel
-Backfiring up the tripowers
-thought I fouled the plugs so installed a new set.(no change)
-going to check for moisture in distributor cap next
QUESTION
I'd did a google search and read several articles on spraying WD-40 into the distributor cap to coat the surface.
Has anyone tried this??
Jim
-I've got fuel
-Backfiring up the tripowers
-thought I fouled the plugs so installed a new set.(no change)
-going to check for moisture in distributor cap next
QUESTION
I'd did a google search and read several articles on spraying WD-40 into the distributor cap to coat the surface.
Has anyone tried this??
Jim
Melting Slicks
Joined: Dec 2009
Posts: 3,232
Likes: 656
From: Thunder Bay
Can't imagine why WD-40 in the distributor cap would be a good idea. If you think you have an ignition problem, do the usual. Check the cap and rotor and replace if in doubt. Backfiring through the carbs sounds like it might be stuck valves. A compression or leakdown test should tell you if this is the problem. If its a fuel problem, pouring a few ounces of fuel down the throat of the carb will get it to fire and run for a few seconds. If that works, you need to figure out why its not getting fuel.
Instructor
Joined: Feb 2016
Posts: 215
Likes: 26
From: Bismarck North Dakota
wd 40 in the cap is to get rid of moisture that may have collected in there.
is it trying to start then backfiring or does nothing but turn over then when you let off the key it backfires then?
is it trying to start then backfiring or does nothing but turn over then when you let off the key it backfires then?
Thread Starter
Racer
Joined: Sep 2011
Posts: 444
Likes: 35
From: Michigan
Knerf
That's exactly what it does. Cranks over fires on couple cylinders then backfires throughout carb when I turn off key.
That's exactly what it does. Cranks over fires on couple cylinders then backfires throughout carb when I turn off key.
Race Director
Joined: May 2006
Posts: 18,728
Likes: 2,579
look down the carburetor throats after it shuts down to see if gas is dripping. It is not unusal for a Holley after sitting all winter to have needles and seats not closing properly. Open the site plugs with the engine off and see if you get lots of gasoline pouring out further indication of a float level issue.
Thread Starter
Racer
Joined: Sep 2011
Posts: 444
Likes: 35
From: Michigan
Opened site plugs and got a very small amount of fuel spilling out. And choke is functioning is it should.
Knerf had a spot on idea. The engine cranks with minimal firing then backfires through the carbs when I turn the car off. Any thoughts on why that happens?
Thanks all..
Knerf had a spot on idea. The engine cranks with minimal firing then backfires through the carbs when I turn the car off. Any thoughts on why that happens?
Thanks all..
look down the carburetor throats after it shuts down to see if gas is dripping. It is not unusal for a Holley after sitting all winter to have needles and seats not closing properly. Open the site plugs with the engine off and see if you get lots of gasoline pouring out further indication of a float level issue.
Is my vette stock?? HAHA
Joined: Oct 2015
Posts: 20,209
Likes: 9,347
From: Im not allowed to tell you
2020 C3 of the Year Finalist - Modified
2020 Corvette of the Year Finalist (performance mods)
2019 C3 of Year Winner (performance mods)
2016 C3 of Year Finalist
dry out the cap or replace it. It sounds like your arcing in the cap. Yes WD40 and some pentrating oils state that right on the label, for moisture in the cap and such.
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Thread Starter
Racer
Joined: Sep 2011
Posts: 444
Likes: 35
From: Michigan
Update
Wanted to get back to everyone concerning my 68. I figured it had to be something basic that had failed. And it's a first for me.
Bad coil..
Has anyone else had this problem? I removed the one that had been on the car for 5yrs. and put the 35yr old one that came on the car and fired right up. Still has some missing to deal with but can take care of that easy enough.
Thanks all for help,
Jim
Bad coil..
Has anyone else had this problem? I removed the one that had been on the car for 5yrs. and put the 35yr old one that came on the car and fired right up. Still has some missing to deal with but can take care of that easy enough.
Thanks all for help,
Jim
So I'm trying to start the car for the first time this spring and this is what I got so far..
-I've got fuel
-Backfiring up the tripowers
-thought I fouled the plugs so installed a new set.(no change)
-going to check for moisture in distributor cap next
QUESTION
I'd did a google search and read several articles on spraying WD-40 into the distributor cap to coat the surface.
Has anyone tried this??
Jim
-I've got fuel
-Backfiring up the tripowers
-thought I fouled the plugs so installed a new set.(no change)
-going to check for moisture in distributor cap next
QUESTION
I'd did a google search and read several articles on spraying WD-40 into the distributor cap to coat the surface.
Has anyone tried this??
Jim
Is my vette stock?? HAHA
Joined: Oct 2015
Posts: 20,209
Likes: 9,347
From: Im not allowed to tell you
2020 C3 of the Year Finalist - Modified
2020 Corvette of the Year Finalist (performance mods)
2019 C3 of Year Winner (performance mods)
2016 C3 of Year Finalist
congrats on figuring it out!!!
Burning Brakes
Joined: Sep 2009
Posts: 1,124
Likes: 140
From: Western New York
In the future, if anyone has a moisture problem inside the distributor cap, instead of spraying wd40 or some other oil that you'll later have to clean up, just take a heat gun or hair dryer, open the points adjusting door and direct the warm air into the cap. It will dry out the moisture with no cleanup needed.
Duane
Duane
Thread Starter
Racer
Joined: Sep 2011
Posts: 444
Likes: 35
From: Michigan
Ever since I got caught using a kitchen knife for a screw driver my wife watches me like a fox. That's a great idea though..Thanks
In the future, if anyone has a moisture problem inside the distributor cap, instead of spraying wd40 or some other oil that you'll later have to clean up, just take a heat gun or hair dryer, open the points adjusting door and direct the warm air into the cap. It will dry out the moisture with no cleanup needed.
Duane
Duane