Can't figure this out... - The 1947 - Present Chevrolet & GMC Truck Message Board Network

DangerBoy · 04-21-2007, 10:21 PM

I changed my spark plugs today in my 350 and now my truck runs worse. It runs like it has a miss and gets worse around 1500rpm. I checked each plug by taking the wires off one at a time and sometimes it would run worse but half the time would run like it would with all the wires hooked up. Also now I keep shocking myself when I get out and touch the door.

Anybody have any ideas what's goin on here?

*rage'nrat638* · 04-21-2007, 10:32 PM

one of the plugs is cracked. or one of the spark plug wires is shorting..

go pop the hood and look with it dark out you might see which one..

the radio might have a clicking noise too.

DangerBoy · 04-21-2007, 10:35 PM

Thats what I was thinkin. Now that the sun is down I'll have to try that out. Would that be why I'm shockin myself too?

O2Bsogood · 04-21-2007, 10:41 PM

Sounds like you might have the ground electrode pushed into the center electrode on one. Or it could be what rage was saying

Bus Ted Knuckle · 04-21-2007, 11:22 PM

Or you could have swapped a couple of plug wires around

bandit1 · 04-21-2007, 11:43 PM

Check your plug gaps too.

Jared

piecesparts · 04-21-2007, 11:55 PM

Just a thought, Did you get a wire crossed on the plugs?

jhow66 · 04-22-2007, 12:55 AM

Check # 5 & 7 wires.

old Chevy guy · 04-22-2007, 04:17 AM

you didnt mention what kind of ignition you have if its old school points try changing the condencer. My 69 camaro w/350 acted like that once after a tune up and the new condencer was defective. Later I changed it over to an HEI and never had that problem anymore!

DangerBoy · 04-22-2007, 05:50 PM

Hey guys thanks for the help! I had one bad plug and I adjusted the gap, some were as much as .020 off. Now she runs like a scalded dog again!

lbpd719 · 04-22-2007, 06:50 PM

and ALWAYS remember the magic number

18436572

04-21-2007, 10:21 PM	#1
DangerBoy Registered User Join Date: Nov 2005 Location: Springville, Ca Posts: 270	Can't figure this out... I changed my spark plugs today in my 350 and now my truck runs worse. It runs like it has a miss and gets worse around 1500rpm. I checked each plug by taking the wires off one at a time and sometimes it would run worse but half the time would run like it would with all the wires hooked up. Also now I keep shocking myself when I get out and touch the door. Anybody have any ideas what's goin on here? __________________ 2002 S10 ZR2 for the dirt. 1968 C10 shorty for the street. She said the truck would be the end of us. I still have the truck! Last edited by DangerBoy; 04-21-2007 at 10:21 PM.

04-21-2007, 10:32 PM	#2
rage'nrat638 Account Suspended Join Date: Mar 2003 Location: THE FALL GUY CHICAGO IL Posts: 5,883	Re: Can't figure this out... one of the plugs is cracked. or one of the spark plug wires is shorting.. go pop the hood and look with it dark out you might see which one.. the radio might have a clicking noise too.

04-21-2007, 10:35 PM	#3
DangerBoy Registered User Join Date: Nov 2005 Location: Springville, Ca Posts: 270	Re: Can't figure this out... Thats what I was thinkin. Now that the sun is down I'll have to try that out. Would that be why I'm shockin myself too? __________________ 2002 S10 ZR2 for the dirt. 1968 C10 shorty for the street. She said the truck would be the end of us. I still have the truck!

04-21-2007, 10:41 PM	#4
O2Bsogood Registered User Join Date: Oct 2001 Location: Charleston, Arkansas USA Posts: 599	Re: Can't figure this out... Sounds like you might have the ground electrode pushed into the center electrode on one. Or it could be what rage was saying __________________ 70' C-10 SWB 71' C-10 SWB 2001 Audi S4 1994 Ford F-150 1974 Gremlin 1959 Apache (Will be For Sale soon) 1972 Chevelle (Will also be For Sale soon) Last edited by O2Bsogood; 04-21-2007 at 10:41 PM.

04-21-2007, 11:22 PM	#5
Bus Ted Knuckle Son of a gun Join Date: Jan 2007 Location: Hot Springs, Arkansas Posts: 1,636	Re: Can't figure this out... Or you could have swapped a couple of plug wires around __________________ Bill BEATERS ARE NEATER

04-21-2007, 11:43 PM	#6
bandit1 Registered User Join Date: Jan 2007 Location: Victoria B.C Posts: 35	Re: Can't figure this out... Check your plug gaps too. Jared __________________ 1969 GMC 910 1970 GMC 1500 custom 1972 yamaha 175 "Money is just like trucks you can never have enough"

04-21-2007, 11:55 PM	#7
piecesparts Parts and more parts Join Date: Nov 2003 Location: Lebo, Kansas (middle of nowhere Posts: 6,821	Re: Can't figure this out... Just a thought, Did you get a wire crossed on the plugs?

04-22-2007, 12:55 AM	#8
jhow66 Registered User Join Date: Jun 2002 Location: Knoxville Tenn. Posts: 3,058	Re: Can't figure this out... Check # 5 & 7 wires. __________________ 56 Chevy Bel-Air 2dr. HT (purchased new) 71 Chevy Cheyenne SWB PU (502HO) 65 GMC short bed step--work in progress and my gofer

04-22-2007, 04:17 AM	#9
old Chevy guy Registered User Join Date: Apr 2007 Location: Foster Rhode Island Posts: 1,176	Re: Can't figure this out... you didnt mention what kind of ignition you have if its old school points try changing the condencer. My 69 camaro w/350 acted like that once after a tune up and the new condencer was defective. Later I changed it over to an HEI and never had that problem anymore!

04-22-2007, 05:50 PM	#10
DangerBoy Registered User Join Date: Nov 2005 Location: Springville, Ca Posts: 270	Re: Can't figure this out... Hey guys thanks for the help! I had one bad plug and I adjusted the gap, some were as much as .020 off. Now she runs like a scalded dog again! __________________ 2002 S10 ZR2 for the dirt. 1968 C10 shorty for the street. She said the truck would be the end of us. I still have the truck!

04-22-2007, 06:50 PM	#11
lbpd719 Zappaphile! Join Date: Apr 2007 Location: Los Banos, California Posts: 228	Re: Can't figure this out... and ALWAYS remember the magic number 18436572 __________________ 1969 C20 LWB Camper Special - The Beater.. 1998 Cheyenne V6 - 4/6 Drop - For The Son

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