I have this problem, that I notice it doesent matter what gear im in, but if im at 2/3 or less throttle, and boost is climbing, that the car will studder around 4psi. If im about 75% or more throttle, I still hit it, but it goes by so fast that you dont even notice it. Any suggestions?

 

Can you double-check to see if your spark plug wires are in the correct positions?




-Ted

 

What do you mean can I? I can go look if thats what you mean. Could it be my timing? I havent checked the condition of the plugs since I put the motor in. Could it be the wires? My friend seems to think so. He said its likely the wires could be bad, atleast with a piston engine. Should I get Mazda wires?

 

If you get the trailings mixed up, that can cause hesitation and slight detonation, especially under the fuel injector crossover at 3,800RPM.

Try and see if you can get replacement NGK wires from your local auto parts store.&nbsp If not, you can get aftermarket wires like Magnecor for a few dollars more...




-Ted

 

When my plug wires went bad it really made my car run like ****.

 

I think the wires on there are stock. How about Bosch wires? I can get a set of those for like 30 bucks. I havent checked the wires yet, but I thought I read somewhere that the trailings fire at the same time. I also need to adjust my timing, I was fiddling with it before the car was running, but it should be off that much. Ill see if I can find some NGK wires.

 

Ok, I just check the wires, and the trailings are fine. How do I check the timing? I hooked my gun up to the leading #1, and I didnt even see the mark, but the car was doing a crappy idle, around 1000 rpms, then it would die.

 

1) Bosch wires are okay.

2) It's the leadings that fire at the same time, not the trailings.

3) Um, you were fiddling with your timing???&nbsp Oh oh, that's not a good sign...



-Ted

 

How do I set the damn timing? I Cant even see the timing mark. What do you mean oh oh?

 

Do you know where the "zero" timing mark is?
Inductive timing guns sometimes have trouble picking up the signal through the spark plugs wires - move the inductive pick-up up and down the length of the spark plug wire until is fires.&nbsp Sometimes you get a better pick-up at the spark plugs wire boot at the spark plug end.

NOBODY should be messing around with the stock timing if you don't know what you're doing.&nbsp This is why I said "oh oh".&nbsp Even midly advance could cause top end detonation (i.e. hesitation)...




-Ted

 

Are you talking about the notch on the crank? I know where that is. The gun was blinking, but I didnt see it at all, then again I had the clamp up by the coil. Should the timing be lined up no matter what the RPM's are? Also, I havent heard any detonation, but I havent really gotten into it. Ive only drivin it twice.

 

Ted, you just answered my question regarding a high rpm hesitation I have. I'm off to get a timing gun! Thanks again, Ted.

Brian

 

Yes, you've got two notches about 1/2" apart from each other on the main pulley.&nbsp The notches were painted either white/yellow or white/red (I forget the proper colors! )


You should at least see the notches within a few inches.&nbsp Make sure you're shooting off the leadings coils (FRONT) - it doesn't matter which one cause they both fire at the same time.


You don't need to hear detonation for it to affect power.&nbsp Slight detonation (inaudible) is enough to cause loss of power...




-Ted

 

Ted, thank you for all your information. Can I assume Im supposed to line white notch up? Isnt the yellow/red for trailing coils. Im going to get some new wires, and hopefully I can get this straightened out. Could inaudible detonation fold a seal?

 

Yes, for the leadings.&nbsp This is the right-most mark.


Yes, or the left-most mark.


Not unless you hold it for a long time...




-Ted

 

That last post was a little confusing. There are only 2 timing marks on the flywheel, one for leading, one for trailing. The leading mark is Yellow. It can be checked using either leading plug lead (Coil in front, plugs on the bottom). The trailing mark is Red. It can be checked using the front coil of the pair of coils further back/ front upper plug lead. The leading timing needs to be checked and adjusted first. Assuming the plug wire hookup is fine, the trailing will be in spec (just a check). Good luck!

Irv, Keith's dad

 

Yep, Keith is right - use trailing FRONT for the timing mark.&nbsp Try to use trailing REAR, and you won't see anything.




-Ted

 

Thanks guys. Ted, Im getting some Accel 300+ wires from the local Advance Auto Parts (I dont know if you have those, but theyre like AutoZone). The cool thing is theyre only 30 bucks.