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-   -   Base Timing Issue (https://www.miataturbo.net/general-miata-chat-9/base-timing-issue-105876/)

T J 09-27-2021 08:05 AM

Base Timing Issue
 
Hi everyone, I'm desparate for help.

1993 1.6. Stock
Setting engine to base 10 deg ign timing causes massive loss of power, can barely get the car to move. I have to set the timing super high (18 -22) Just to get it to run anywhere near normal.

I'm assuming this will correlate with my issue*
Really bad misfire
Tore everything apart and redid the timing belt to make sure; everything matches up the way it should. Lobes, marks, tdc perfect.


Anyone experience this? I'm struggling.

Thank you!

TJ

x_25 09-27-2021 10:36 AM

Has the harmonic balancer sliped?

allofit 09-27-2021 11:23 AM


Originally Posted by x_25 (Post 1609498)
Has the harmonic balancer sliped?

Exactly my first thought too.

T J 09-27-2021 02:46 PM


Originally Posted by allofit (Post 1609501)
Exactly my first thought too.


Originally Posted by x_25 (Post 1609498)
Has the harmonic balancer sliped?

how would I go about figuring that out?

SpartanSV 09-27-2021 07:38 PM

Put cylinder one to TDC based on a soft rod in the number 1 spark plug hole then check that the TDC mark on your balancer matches the TDC mark on your timing cover.

This isn't the 100% way but if you're balancer has slipped 10 degrees or more it should make it obvious.

T J 09-27-2021 07:46 PM


Originally Posted by SpartanSV (Post 1609573)
Put cylinder one to TDC based on a soft rod in the number 1 spark plug hole then check that the TDC mark on your balancer matches the TDC mark on your timing cover.

This isn't the 100% way but if you're balancer has slipped 10 degrees or more it should make it obvious.

Yup, you guys where right! It was like an entire inch off. I made new marks and engine rune and sounds about right.

Still having spark issue though, new plugs and wires, proper gap; thinking coil pack :(?

x_25 09-28-2021 11:13 AM

Just a heads up, once the balancer slips, it keeps doing so, so your marks will be off next time. Time for a new one.

curly 09-28-2021 11:47 AM

I can confirm that, even starting/stopping the motor will cause it to slip again.


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