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03-01-2010, 11:48 AM #1
- Join Date
- Feb 2010
98 Silverado 5.7 - Won't start when wet
Weird problem that makes me want rethink keeping this truck.
Truck is great to start when the weather's dry (hot or cold), but once or twice a year it just won't start after maybe sitting a day in damp weather. It never did it when the weather's dry.
I've put 3 new dist caps and 2 sets of wires on it in the last year. I've also put a coil on it and have WD-40'd everything...still not start. It will sputter a couple of times, and black smoke will beltch out a couple of times, but no start. Has a new fuel pump also.
I'm trying to remember what I did, to get it going last time, but I think it sat & dried-out, then started on it's own.
There's something that must be inherently faulty on these things that leaks water in. Hoping someone else out there has soem experience with the same problem...makes me second think the reliability of this truck as it does it without any warning (other than the weather forcast..even then, not every time)
03-01-2010, 12:05 PM #2
Id have it scanned and see if any codes come up.1995 Silverado,Z71, 3-inch lift,2-inch leveling kit, SkyJacker Suspension, short ram-air intake, throttle body spacer, MSD ignition coil, straight pipes
03-01-2010, 01:40 PM #3
Is there any sparks? I am assuming there is if it spitting and sputtering...
Try spraying a little ether into the TBI, and then start it.
Wondering if the timing is a bit off...
Wouldn't hurt to check the Distributer Cap for cracks, or burnt contacts.Pavement sucks... :grrrrrr:
1994 K1500 4x4 Ext. Cab
PCM chip and Xenon 8000k bulbs
350cu.in bored over .050"
balanced Crank, 10:1 compression
Flat top pistons,cam,ported heads
Option Racing Cold Air Intake
Holley Throttle Body Spacer
Accell Igition, 45kv coil
FloTech Headers, no CATs, dual exhuast
Goodyear Silent Armor A/T 305/70-16
Pioneer SupertunerIII CD USB Bluetooth
Kicker ZX200.2 ZX Amp
Kicker Audio COMP 10" Subwoofer
03-02-2010, 10:50 AM #4
- Join Date
- Feb 2010
Weather was sunny here most of the day, still kinda cold, but things dried up quite a bit. Got home from work, and tried it again...fired right up. I don't know, same as last time...
I'm going to replace th ecoil again and seal the cap to the distributor base with either a heavy grease or a light coat of silicone and wait for spring!
03-02-2010, 10:55 AM #5
dump some sea foam in ur gas (takes out the water in it), buddy dumped a bottle down his carb and thing bogged blew smoke then was perfect. just an idea, he didnt really care for his truck TO much but2000 Chevy Silverado 1500 Z71 323 5.3L V8
-K&N 57 Series Generation II - Cold Air Intake
-JVC Deck - KD-HDR50
-New Rear End
-New Alternator, Battery and Starter
-Key-less Entry (Thanks aboston)
-Bed Liner w/mat
-Blue Xenon Headlight Bulbs (High/Low)
-2008 Buell 1125R
-2003 Mustang GT Premium (500horse)
-2010 Polaris 800 IQ
Looking for a 1990 454 SS 1500 to buy
03-03-2010, 04:05 PM #6I'm going to replace th ecoil again and seal the cap to the distributor base with either a heavy grease or a light coat of silicone and wait for spring!GM TECH
05 silverado shortbed
03-03-2010, 05:06 PM #7
wet weather issue
Ok you may think I'm nuts but here is what I did, had the same issue with a 89 cutlass. Dry day I opened the hood and had the hose on fine mist and started the car. Started to spray and when I hit the wires with some h2o the sparks flew and the rough idle started so it was a wire change as the insulation had degraded pretty bad but they looked fine.
call me nuts but it worked....
OK so I stopped reading at the seafoam reply and now see I'm not the only one that sprays water...
Last edited by jake's silverado; 03-03-2010 at 05:09 PM.
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