15* BTDC? - pics inside
03-18-2004, 06:40 PM
#1
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15* BTDC? - pics inside
Well I checked the timing of my 3vze without TE and TE1 connected and with them, the result was the same. 15* BTDC.... IF that last number is 15 and not 13...
here is the pic taken at night using a timing light with the TE1 and TE connected. The mark you can see is juuuuust inside of that last mark...
1. Is that ~15* BTDC?
2. Anyone ever have that much advance?
Should I unequivocally be pinging and somehow not hearing it??
The engine has 264,000 miles on it and has been set to this from the get go...
here is the pic taken at night using a timing light with the TE1 and TE connected. The mark you can see is juuuuust inside of that last mark...
1. Is that ~15* BTDC?
2. Anyone ever have that much advance?
Should I unequivocally be pinging and somehow not hearing it??
The engine has 264,000 miles on it and has been set to this from the get go...
03-19-2004, 04:59 AM
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First you need to make sure your TPS is adjusted properly. You can do a quick check by cracking open the throttle gently and watching the timing. The timing should advance itself quite a few degrees just as the throttle comes off idle. If it doesn't then your TPS is out of adjustment and this needs to be calibrated first. If your TPS is adjusted properly then it's possible that the distributor wear is casing this timing problem. I'd check your cap and rotor for any weird play. Overall I wouldn't worry about it. If the TPS is fine and the engine likes 15* BTDC then leave it. I know I have mine set at 13* BTDC on 87 octane and I've gotten a very noticeable power increase out of it. I'll never go back to 10* BTDC.
03-19-2004, 10:12 AM
#7
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Originally Posted by MTL_4runner
I believe that there is a umper that needs to be connected at the OBD connector to check timing correctly.
Isn't that in the diagnostics port where I jump TE and TE1? Both the "CE" and "OD off" lights were flashing.
Originally Posted by miket223
First you need to make sure your TPS is adjusted properly. You can do a quick check by cracking open the throttle gently and watching the timing. The timing should advance itself quite a few degrees just as the throttle comes off idle. If it doesn't then your TPS is out of adjustment and this needs to be calibrated first. If your TPS is adjusted properly then it's possible that the distributor wear is casing this timing problem. I'd check your cap and rotor for any weird play. Overall I wouldn't worry about it. If the TPS is fine and the engine likes 15* BTDC then leave it. I know I have mine set at 13* BTDC on 87 octane and I've gotten a very noticeable power increase out of it. I'll never go back to 10* BTDC.
No wonder I could feel the difference btwn 87 and 93 octane....LOL
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03-19-2004, 10:48 AM
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If it says 15* at 800 rpms and normal operating temp (with it jumpered), then I'd say that's a little high. Personally I'd bump it down a little. But if your truck isn't getting any pinging then more power to you.
The TPS could have a problem but someone could have just set the timing too high too.
The TPS could have a problem but someone could have just set the timing too high too.
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