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12-05-2010, 04:12 PM
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#1 |
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Registered User
Join Date: Mar 2010
Location: houston texas
Posts: 44
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timing problem
i was changing my intake gasket so i took out the distributor.. when i put it all back together i tried turning the truck on and it would just backfire and the carb blows gas out.. im thinking its the timing , i probably put the distributor in wrong.... does anyone have an idea on how to fix this problem.. or if it can be something else??? please help i need it for work tomorrow!! thanks
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12-05-2010, 04:15 PM
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#2 |
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Registered User
Join Date: Jun 2010
Location: Upland Ca
Posts: 4,143
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Re: timing problem
Engine and Drivetrain section, FAQ: SBC Ignition Timing.
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1972 C10 SWB, Air, PS, PB, 350/350THM. Second owner. 1965 Corvette roadster, 44K miles, 327/365 SHP, 4 speed, side exhaust, knockoffs, teak, second owner (bought in 1970), Have ALL numbers matching components. My frame off restoration thread: http://67-72chevytrucks.com/vboard/s...d.php?t=556703 |
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12-05-2010, 04:39 PM
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#3 |
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yes, i do
Join Date: Jun 2007
Location: Spokane, wa
Posts: 2,734
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Re: timing problem
i would set the motor to tdc then reinstall the distributor. sounds like its 180 out or its too far advanced
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ERROR 404....... SNAPPY COMEBACK NOT FOUND  _______________________________________________________________________________________________ -60 Chevy C10, dead 350/good th350 combo, sitting on a 76 c10 blazer frame, built from 11 different vehicles "the abomination" -07 gmt900 silverado 1500 lt xcab z71, granite blue -81 suzuki gs650g "shelah"- current project -81 kz1000m1 csr "sarge" -next project (just beautification) -07 kawasaki vulcan classic vn900 Last edited by 60ratrod; 12-05-2010 at 04:40 PM. |
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12-05-2010, 04:46 PM
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#4 |
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Registered User
Join Date: Mar 2010
Location: houston texas
Posts: 44
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Re: timing problem
how do you set it to tdc?
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12-05-2010, 04:52 PM
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#5 |
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Sierra Grande Club
Join Date: Jan 2007
Location: New Mexico USA
Posts: 2,433
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Re: timing problem
See post #2.....
Heres the link for the FAQ. http://67-72chevytrucks.com/vboard/f...splay.php?f=92 s/t
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1971 GMC Sierra Grande, 1/2 ton short wide, original 4 bolt 010 020 block & heads. (matching #'s). 383 stroker, SMI q jet 750 cfm, Lunati Voodoo 60102 cam, Scorpion roller rockers, Spin Tech pro street mufflers with X pipe. 
Last edited by Sport/Truck; 12-05-2010 at 04:52 PM. |
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12-05-2010, 07:52 PM
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#6 |
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Msgt USAF Ret
  
Join Date: Jan 2005
Location: Kalamazoo, Michigan
Posts: 8,709
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Re: timing problem
Pull the no.1 spark plug and put your thumb or a piece of tissue in the plug hole. Roll the engine clockwise until the compression blows your thumb or the tissue out of the hole. Then continue to roll the engine CW until the mark on the balancer lines up with the timing pointer at zero.
This will be TDC on no.1 Then pull the distributor cap off and check where the rotor button is pointing. If the rotor is pointing anywhere but the no. 1 spark plug then you'll need to reset it to point to no. 1. If it's pointing at the no.1 then you need to check the firing order to see if some wires are crossed. See the diagram below.
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VetteVet metallic green 67 stepside 74 corvette convertible 1965 Harley sportster 1995 Harley wide glide Growing old is hell, but it beats the alternative. |
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12-05-2010, 08:07 PM
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#7 |
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Registered User
Join Date: Mar 2010
Location: houston texas
Posts: 44
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Re: timing problem
Why would I have to roll the engine if all I moved was the distributor?? Sorry I don't know much about timing
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12-05-2010, 08:23 PM
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#8 |
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yes, i do
Join Date: Jun 2007
Location: Spokane, wa
Posts: 2,734
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Re: timing problem
because its easier to set the motor to tdc and set the distributor to #1. and because from the sounds of it when you reinstalled the distributor you didn't reinstall it to where the motor was sitting. did you remove the cap and mark where the distributor was set before you reinstalled the distributor?
__________________
ERROR 404....... SNAPPY COMEBACK NOT FOUND _______________________________________________________________________________________________ -60 Chevy C10, dead 350/good th350 combo, sitting on a 76 c10 blazer frame, built from 11 different vehicles "the abomination" -07 gmt900 silverado 1500 lt xcab z71, granite blue -81 suzuki gs650g "shelah"- current project -81 kz1000m1 csr "sarge" -next project (just beautification) -07 kawasaki vulcan classic vn900 |
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12-05-2010, 08:34 PM
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#9 |
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Registered User
Join Date: Mar 2010
Location: houston texas
Posts: 44
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Re: timing problem
ok I get it... no I didn't I was in a hurry so I didn't even think about it...so how do I turn it?
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12-05-2010, 10:35 PM
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#10 |
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yes, i do
Join Date: Jun 2007
Location: Spokane, wa
Posts: 2,734
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Re: timing problem
with a 5/8 socket on the crank bolt. rotate clockwise until you are on the compression stroke and then line up the mark on the balancer with the 0 mark on the timing tab on the timing cover
__________________
ERROR 404....... SNAPPY COMEBACK NOT FOUND _______________________________________________________________________________________________ -60 Chevy C10, dead 350/good th350 combo, sitting on a 76 c10 blazer frame, built from 11 different vehicles "the abomination" -07 gmt900 silverado 1500 lt xcab z71, granite blue -81 suzuki gs650g "shelah"- current project -81 kz1000m1 csr "sarge" -next project (just beautification) -07 kawasaki vulcan classic vn900 |
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