Question about 1983 GMC Jimmy

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1983 gmc jimmy 350 engine. no sticker in engine compartment. what is timing deg at what rpm ???

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12 degrees was common for those engines at 650 rpms, but make sure that the engine is warm and disconnect the vaccum advance, which will probably require plugging the vaccum port at the carb.

Posted on Mar 30, 2011

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Factory setup 69 Chevy C10 350


Idle speed 900 RPM
Fast Idle 1500 RPM
Timing (I prefer ) 6 DEG BTDC (book) 4 Deg BTDC
Spark Plug gap 35
Points Gap. I switched to Elect Ing so got to go get the book ok 0.019
Dwell 28 to 32 Deg

Let me know if you need anything else Mike

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Why does engine fan stay on when engine's cold? 95 jimmy


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Where's the a/c accumulator on a1996 Jimmy


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1 Answer

What are the timing specifications for a 1983 chevrolet 350


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1 Answer

Timing Dpecs for Toyota Supra 87 6 cylinder


1987 non-turbo: 10 deg Before Top Dead Center (BTDC) @700 rpm
1987 Turbo: 10 deg BTDC @650 rpm.

To set the timing, you will need to connect a jumper wire between terminals E1 and TE1 on the diagnostic terminal. This diagnostic terminal is located just aft of the engine compartment fuse box. It is a black plastic box marked "diagnostic" on the cover, which flips open to reveal the terminals inside. There is a diagram on the inside of the cover which explains the terminal positions. On the Turbo model, you need to remove the forward section of the engine cover to gain access to the number one spark plug wire.

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1 Answer

Idling Rpm


About 600 RPM in gear hot engine (over 165 Deg's Farenheit).

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Check by lower rad hose in engine compartment, in fuel line.

Jan 25, 2009 | 1986 GMC Jimmy

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Cannot locate relay switch for fuel pump on a '97 Jimmy


The main relay switch is on the fuel pump itself/ There are others in the engine compartment and under the dash or side of dash panel

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1 Answer

1983 GMC Jimmy 4 wheel drive won't engage


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Jan 09, 2009 | 1983 GMC Jimmy

1 Answer

Where is the fuse box on the 1983 jimmy


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Dec 20, 2008 | 1983 GMC Jimmy

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