31 degrees BTDC timing ?? - Pirate4x4.Com : 4x4 and Off-Road Forum

whitetoy · 04-18-2004, 09:09 PM

Not a newbie, but don't know anything about LandCruisers.

My sister took her 88 FJ62 (EFI straight 6) for
a CA smog check. Passed the emissions test, BUT
failed the timing. Should be 7 degrees, but
measured 31 degrees !! How is this possible ?
I am assuming she didn't mis-read the printout (I haven't seen it yet).

She says it runs fine, without pinging.
I haven't looked at it yet, but promised I would.
What could possibly cause this ?
I don't know the mechanical history behind
the vehicle. Must have passed smog 2 years ago.
I'm afraid that retarding it 24 degrees will
cause it to not run worth a crap, and then fail
the emissions part

Any ideas before I start trouble-shooting ?

Buddha's Ghost · 04-18-2004, 10:01 PM

If it is a gear driven distributor was the distributor removed anytime in the past?

whitetoy · 04-19-2004, 07:42 AM

Quote:

Originally Posted by Buddha's Ghost

If it is a gear driven distributor was the distributor removed anytime in the past?

Don't know, but that is possible. Is 24 degrees equivalent to one-tooth off ?
Hopefully its that simple.

toy283 · 04-19-2004, 09:55 AM

Mechanical and/or vacuum advance could be stuck open.

04-18-2004, 09:09 PM	#1 (permalink)
whitetoy Registered User Join Date: Jan 2001 Member # 2873 Location: Folsom, CA Posts: 950	31 degrees BTDC timing ?? Not a newbie, but don't know anything about LandCruisers. My sister took her 88 FJ62 (EFI straight 6) for a CA smog check. Passed the emissions test, BUT failed the timing. Should be 7 degrees, but measured 31 degrees !! How is this possible ? I am assuming she didn't mis-read the printout (I haven't seen it yet). She says it runs fine, without pinging. I haven't looked at it yet, but promised I would. What could possibly cause this ? I don't know the mechanical history behind the vehicle. Must have passed smog 2 years ago. I'm afraid that retarding it 24 degrees will cause it to not run worth a crap, and then fail the emissions part Any ideas before I start trouble-shooting ? __________________ Rick 1999 Tacoma 4x4

04-19-2004, 09:55 AM	#4 (permalink)
toy283 Registered User Join Date: Feb 2000 Member # 234 Location: Glendale, CO, US Posts: 799	Mechanical and/or vacuum advance could be stuck open. __________________ Dave '84 X-Cab, Supercharged 283 V8, SM420, dual cases, etc.... '85 4Runner

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04-18-2004, 10:01 PM	#2 (permalink)
Buddha's Ghost Registered User Join Date: Mar 2000 Member # 334 Location: Auburn, WA Posts: 1,067	If it is a gear driven distributor was the distributor removed anytime in the past?