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06-02-2010, 09:10 AM
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#1 |
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Registered User
Join Date: Jan 2002
Location: Texarkana, Texas
Posts: 261
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250 timing issue
trying to get this thing running right. If the timing is not 50* advanced the truck will barely stay running. Could someone have put the gears on wrong? The engine is out of an Olds but is a Chevy 250. I just replaced the intergral head with a regular one and it was doing this befor the swap too.
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1961 Apache short step. |
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06-02-2010, 10:05 AM
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#2 |
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Registered User
Join Date: Aug 2009
Location: Bowser
Posts: 13,736
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Re: 250 timing issue
Harmonic balancer has spun??? Confirm tdc on #1 and that your timing marks at the tab are correct.
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06-02-2010, 10:22 AM
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#3 |
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Registered User
Join Date: Jan 2002
Location: Texarkana, Texas
Posts: 261
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Re: 250 timing issue
marks are at tdc. The dist.rotor is at 5 o'clock. I am going to try and pull the balancer, the bolt appears to be broken off.
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1961 Apache short step. |
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06-02-2010, 11:50 AM
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#4 |
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Registered User
Join Date: Jan 2002
Location: Texarkana, Texas
Posts: 261
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Re: 250 timing issue
pulled the valve cover. Both valves full closed, the rotor points to #1, which is at 3 not 5 o'clock. The timing mark is at 9 o'clock, which is where it is with the timing light. Something moved some where. Maybe the rubber around the balancer broke?
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1961 Apache short step. |
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06-02-2010, 12:17 PM
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#5 |
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Registered User
Join Date: Mar 2003
Location: San Francisco, CA USA
Posts: 2,454
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Re: 250 timing issue
Pull the #1 plug, stick a pencil in the hole, and turn the engine by hand to find TDC. Then see where the mark is on the balancer.
Ray |
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