Timing Troubles

[skinnymane]

IIIIIMMM back...with more problems. So I tried the ground the ECU trick to put her in timing mode, and it runs so smooth. Heres the problem, when I get the timing right, and unplug the ground, it runs like complete garbage again. The AC makes a horrible whine and it runs like it is way out of time. It would die at a complete stop if I didnt give it a little gas while braking. I replaced all the vacuum lines and I just dont know what to do. What would the downfall of just keeping the ecu grounded? Like I said it runs beautifully when its grounded, I just need to know the long terms effects.

[camoit]

Did you change the timing belt???? I have a feeling it's off 1 tooth.
The AC is a hole other thing. Sounds like the bearings are bad. Or the belt is slipping. But we need to figure out the timing problem first.
Please list all that you have done to this point and everything it does. We need more info. Thanks

[skinnymane]

Ok here goes

Replaced,timing belt, distributor, dist. cap, rotar, all new belts, spark plugs and wires, cut off the exhaust, put a glass pack on, new coolant sensor, vacuum lines, new starter, new alternator, new coil, new (used) MAF. I am going to put a video on youtube so you can see and hear how it runs. It just doesnt want to right right. We have redone the timing belt like 6 times now. I think my rotar may be off just by a little im not sure. Ill post the link when I can.

[camoit]

when you did the belt, did you use the corect mark for the cam? the book is not clear in there picture. It's easy to get it off 1 tooth and it will be advanced.

6401

[skinnymane]

https://www.youtube.com/watch?v=2LcTXpN2IlU&feature=youtube_gdata_player

[skinnymane]

Yes I went off of that mark. The actual mark on my cam was extremely hard to find since I is not dimpled in but chipped from the teeth.

[BradMph]

All that stuff you replaced can cause some confusion sometimes when your chasing one thing.

(Replaced, timing belt, distributor, dist. cap, rotor, all new belts, spark plugs and wires, cut off the exhaust, put a glass pack on, new coolant sensor, vacuum lines, new starter, new alternator, new coil, new (used) MAF)

I understand you probably kept a close eye as you went along, but as we are all human, we can only concentrate on one thing at a time. I hope one of those things you replaced isn't giving you a problem by cloaking the actual problem. I have done the same thing when getting on a roll, then suddenly I'm overwhelmed with :wtf:

[skinnymane]

Is there a long term negative outcome with keeping my ecu grounded?

[camoit]

Hit up droppedmitsu or LSRMike there some of FI know all guys. I'm carb first gen. But there is a timing issue. Something is off.

[dmr8x2]

did you think to check the TPS and or the ECU? the ECU's are known for the Capacitors going bad and leaking onto the board and eating at the traces. If you know some one with basic soldering skills the replacement is easy, just don't use Sh1t-Shak CAPS.

[skinnymane]

Ecu is good. Tps im not too sure about. I know I do need to adjust it some more.

[Bill e]

Camoit, do you line the dimple on the gear to the notch? Your picture shows it off somewhat... .

Thanks,

Bill e

[camoit]

Camoit, do you line the dimple on the gear to the notch? Your picture shows it off somewhat... .

Thanks,

Bill e
The dimple in the cam gear lines up below the top of the head. There is a casting mark on the head it will line up to.

The "Notch" you are talking about is the top of the head and the bottom of the valve cover.
Another way to look at it is: The cam dot is one tooth down from the top of the head.

[LSR Mike]

Grounding the pin to the ECU is just locking in the timing, keeping the advance function from working so you can set the base timing. leaving it there won't kill it.