gotta quick question

[brs86supra]

ok guys and gals i finally got my supra to start today. i am currently doing a na-t swap on my 87. well the thing is, i can only get it to idle good at like somthing like 30 degrees btdc or something like that. why do u guy think this is, wut could be causing this to happen. when i put the timing to 10 degrees btdc it want to bog down and shut off. any help would be greatly appreciated

 

[trydrew]

My guess is that your CPS is a tooth off.

Edit: Here, try this:
http://www.supramania.com/forums/showthread.php?t=38775&highlight=CPS

 

[dugums]

Did you connect the terminals of the diagnostic block that the TSRM specifies?

 

[brs86supra]

i did set everything at tdc when i started and i aligned the cps as to perspective according to the tsrm. and i still couldnt get it to idle right, so i turned it a tooth or tooth and finally got it to idle right adn when i looked at the timing mark on the crank compared to the mark on the block and it was way past 15 degrees btdc. and no i didnt connect the terminals on hte diagnostic box, really never had to do it before so i didnt think i had to do it this time.

 

[dugums]

I can't set my timing properly without the diagnostic terminals being jumped.

 

[jetjock]

The slaying never ends...

 

[brs86supra]

i dont understand jetjock wut do u mean

 

[cuel]

http://www.supramania.com/forums/showthread.php?t=59953&page=2

Read posts 17 and 20

 

[dugums]

The thing I don't really understand is why you are trying to set timing in a way inconsistent with the factory directions.

I don't understand any of my cars systems as well as JJ does, I wish I did. In absence of this knowledge, I do my best to follow the instructions that are readily available.

Basically this thread went as follows:

You asked: why is my timing off?

I asked: did you follow the directions?

You said: no.

And your reason was: just because.

 

[jetjock]

^ Damn. You may not understand some things but your clarity of thought is impeccable. Common sense at it's finest

 

[brs86supra]

ok sorry for hte misclarification. but wut i was trying to say was how come my timing has to be so far off in order for my car to idle right. b/c when i set it at 10degrees it just wants to cut off and idle like crap.

 

[dugums]

If you did not jump the diagnostic block the timing is not set properly.

It could certainly be something else - but since we know you did not set ignition timing properly, I am asking you to go and do it again per TSRM specs.

If that is not clear enough - what I want you to do is:

Verify that when the Crank is at 0 degrees your cam gear marks line up with the marks on the rear timing belt cover.

Take out the CPS and align the drilled mark per the TSRM.

Jump the diagnostic block per the TSRM

Adjust timing per the TSRM

Again, this may NOT be what is wrong with your car. But if you can't put the effort in to attempt to time the car properly, not many people are going to want to put the time in to help you.

There are certainly other things that can cause your condition - I would suggest that after you set your timing properly, if you are still having issues, you check out the troubleshooting guides in the TSRM. They will give you an idea of what types of items could be causing your problem.

If, after you have gone through the correct procedures you still can't figure out what is going on, then report back to us with details.

 

[brs86supra]

ok thanks a lot dugums, sorry if it sounds like im trying to give u a hard time, im really not. again thanks for the help and i will try to jump the terminals. it just sux that i can only work on the car one day a week.