set timing

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Jul 7, 2007 | 07:32 AM

sdpuff

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Joined: Feb 2007

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From: blackcreek ga

set timing

my 87 150 4.9 i was setting the timing and i noticed that at tdc compression stroke the timing mark on the crank pulley was at 6 o'clock or at the bottom no where near the timimg plate that indicates btdc or atdc or tdc. does anyone know why? the truck runs ok but i want to make sure the timing is set right.

Jul 7, 2007 | 10:45 AM

netscaner

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Joined: May 2007

Posts: 754

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From: Solon, Ohio

If the engine runs, then your at the top of the exaust stroke on #1, not the compression stroke if it's at 6:00.

Jul 7, 2007 | 03:33 PM

sdpuff

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From: blackcreek ga

i put a cork in the #1 cyl hole and when it popped out and i assumed it was on the compression stroke

Jul 8, 2007 | 05:36 AM

sdpuff

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From: blackcreek ga

i corked it

Quote:

Originally Posted by netscaner

If the engine runs, then your at the top of the exaust stroke on #1, not the compression stroke if it's at 6:00.

I put a cork in the #1 cyl hole and when it popped out i assumed it was on the compression stroke. Is that wrong?

Jul 8, 2007 | 02:58 PM

vman

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From: brimfield township,OH

somebody could have put the distributor in 180 degrees out.

Oct 13, 2007 | 01:15 PM

wizzard

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If it was 180 out, it would not run correct?? he says the truck runs good just checking timing.

Oct 13, 2007 | 01:41 PM

subford

Fleet Owner

Joined: Aug 2005

Posts: 23,666

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From: Easton,Ks

He is looking at the wrong mark on the damper.

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Oct 13, 2007 | 05:24 PM

sdpuff

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From: blackcreek ga

theres a notch

Quote:

Originally Posted by subford

He is looking at the wrong mark on the damper.

theres a notch in the dampner and i unhooked the the pip spout connector and checked the timing and it just runs sluggish, and if you run it on the highway for about 20 mins. it wants to shut down and when you sit for a min. it will run fine. do you think its the ecm on the distrb. is it getting hot and shutting the truck down. id really like to get this thing running top notch if i could with no problems.