80 Series Ignition Timing (4500)
Submitted: Sunday, Apr 23, 2006 at 20:57
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Beast of Bodmin
Hi Guys,
Finally got the cyl head back on the cruiser, its taken far too long........
Now at the point of starting the engine. Initially it ran at the 'as built' ignition setting which gave over 10deg advance at idle (in park). So l've retarded it to somewhere between 3-5deg at idle in neutral. Ran like a pig at 10deg, but is much sweeter at 3deg.
My question is what is the Toyota recommended ign timing and how is it set?
My Max Ellery manual suggests that it should be 3deg at idle in neutral with 'TE1 and E1 of DLC connected). What is TE1, E1 and TLC?? I cant find them in a glossary.
Cheers
BoB
Reply By: FZJ 80 - Sunday, Apr 23, 2006 at 21:34
Sunday, Apr 23, 2006 at 21:34
BoB.
The 2 pins are in the diagnostic connector on the pass side firewall. If you flip the lid up the underside of the lid has a pin map of the connector layout. use a split pin or similar to
bridge the te1 and e1 pins,start engine,
check engine light on dash will be on or flashing. this gives an unaltered base timing value and is very important for accurate setting. 3deg is very conservative for low octane fuels, last time i set
mine i ran it at 7deg (Using Gas and Premium petrol)
Good luck
Greg
AnswerID:
168652
Follow Up By: Beast of Bodmin - Sunday, Apr 23, 2006 at 22:39
Sunday, Apr 23, 2006 at 22:39
Thanks Greg,
I'll have a lookat that tomorrow.
Did you set yours at 7deg as it was best for petrol or for lpg?
As you seem to be tending towards, lpg is a much higher octane than ulp, so cannot be used to set a highly advanced ign without risking detonation when running ulp fuel. Have you experimented with this?
Cheers
BoB
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424017
Reply By: Member - DOZER- Friday, Apr 28, 2006 at 08:14
Friday, Apr 28, 2006 at 08:14
Gday
do the joining of the terminals, and you will find your setting is retarded... The computer sets the timing at about 10 at idle, but when you
bridge the terminals, it returns to 3. I have had
mine set at 6 for a while, and it will run on premium aswell as unleaded. The thing you have to be aware of, is that the computer is programmed to back off the timing, and keep its map concervitive, if pinging occurrs....the motor has two knock sensors, that will detect this before you hear it....The result will be lower power and more fuel consumption from your advanced setting.
So, i recommend 6 if you want to run premium unleaded, or slightly less if you want to run std fuel....When set, take off the
bridge and
check it again, and you will see it is back up to about 10...this is normal.
Andrew
AnswerID:
169424