Weird timing issues.
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Cross-Country
Joined: Aug 2012
Posts: 83
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Weird timing issues.
Truck is a 1993 F150, with the 4.9 six and the 5 speed. Not sure which one, but given how basic the truck is, I'm assuming the Mazda.
Spout jumper out: Truck starts ok. Timing stays in one spot, exactly in the passenger side triangular notch with very little no wobble. Does not move as engine revs.
Spout jumper in: Truck starts ok, but the timing mark is a little bit back from the large notch and it is somewhat wobbly. Reving the engine causes it to move forward just a little, up to notch if run hard enough. Letting it go causes the mark to slingshot forward past the notch very briefly before settling back to where it was before the rev.
Is this normal?
Spout jumper out: Truck starts ok. Timing stays in one spot, exactly in the passenger side triangular notch with very little no wobble. Does not move as engine revs.
Spout jumper in: Truck starts ok, but the timing mark is a little bit back from the large notch and it is somewhat wobbly. Reving the engine causes it to move forward just a little, up to notch if run hard enough. Letting it go causes the mark to slingshot forward past the notch very briefly before settling back to where it was before the rev.
Is this normal?
Junior User
Joined: Jul 2011
Posts: 68
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i would think so. Set base timing with the spout out at ten or maybe 12 degrees and put the spout back in. The purpose of the spout is to allow you to set the base timing. With it in, the computer varies the timing as it sees fit.
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Cross-Country
Joined: Aug 2012
Posts: 83
Likes: 2
I've done that. Did it earlier today. Ran the motor to operating temperature, shut it off, pulled the jumper, started it up, got the mark nicely in the triangle, tigened the dizzy back down back down, turned it off, replaced connector.
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Mbrgr1
1987 - 1996 F150 & Larger F-Series Trucks
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Mar 25, 2012 11:45 PM
