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How to Set Ignition Timing on 1997 Suzuki X90

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Timing issue?? on 1994 Samurai

Hey guys long time ago member trying to get some tech support for my Samurai...

Short long story... Took Samurai to Uwharrie in the fall, after unloading off the trailer at Eldorado headed to the trail and got to the Rocky Mt parking lot and it started riding rough, backfired and died.  Couldnt get it started, loaded it back on the trailer and brought it home, let it sit till January.

Thought it probably jumped time so I got a new belt, lined everything up, got it started but it wouldn't time... tried a bunch of other stuff n it's still not running...

Tried the 180 degrees out, no luck, it's timed on #4... nothing...

So, am I missing something with the timing or should I look at something else?

Thanks!

I live in Clemmons so if someone wanted to come by and scratch their head with me just let me know...
Kevin
336-655-3498

Re: Timing issue?? on 1994 Samurai

Reply #1 –
Bad ECM?
Did you check to to make sure you are getting fuel and spark?

I don't think timing belts jump teeth near as often as people seem to think....so it was likely ok.

Re: Timing issue?? on 1994 Samurai

Reply #2 –
Any play in the timing pulley just thinking it could be the keyway.

Re: Timing issue?? on 1994 Samurai

Reply #3 –

Bad ECM?
Did you check to to make sure you are getting fuel and spark?

I don't think timing belts jump teeth near as often as people seem to think....so it was likely ok.

i have seen so many guys on here make this mistake. timing belts dont just jump timing for no reason. when they do it normaly shows. there will be some kind of belt damage. a slightly loose belt wont jump timing. even a slightly cracked and worn belt will hold timing just fine as long as it has all its teeth. when you pull your timing cover and cant "see" something wrong, there probably isnt. a timing belt will usualy break 9 times out of 10. set it a tdc, check the marks to make sure they are right and then put it back together and look else where for a problem. the quickest way to check the belt is to set the timing mark on the crank at tdc and then pull the distributor cap and make sure the rotor is pointing at #1 plug wire. if it is, your problem is somewhere else.

Re: Timing issue?? on 1994 Samurai

Reply #4 –
Anyone near Clemmons with a good ECM?  See if that'll fix it?  Hate to spend $275 for a ECM that I dont need...

Re: Timing issue?? on 1994 Samurai

Reply #5 –
So if I understand you right ...you can get it started and will run, but poorly?
What Dice posted about how to set initial timing is the same way I do it and never failed me.
Overall, what kind of shape is this engine in....particularly the head?

Re: Timing issue?? on 1994 Samurai

Reply #6 –
check out the for sale section and post up a wanted thread. one will turn up. but if it runs it may not be the ecm. almost sounds like you have an ignition issue from your discription.

Re: Timing issue?? on 1994 Samurai

Reply #7 –
Head was rebuilt about 2000 miles ago...   Has a MSD ignition and SS blaster coil.  Getting spark and fuel...  will sputter and pop but wont run.  I have both the Suzuki factor manual and a Haynes and have checked and double checked to make sure it's set up right but just can't get it to run.

Re: Timing issue?? on 1994 Samurai

Reply #8 –
Have you had it running good with the MSD and blaster coil?  I have heard of some people using a different than stock coil, to run an EFI samurai, but generally you can't just swap any old coil on there and get it to run and run right.

Re: Timing issue?? on 1994 Samurai

Reply #9 –
Has a MSD ignition and SS blaster coil.

If it was me......I'd disable the MSD then I'd beg, borrow, or steal a known good stock coil just to eliminate those parts and continue trouble shooting if need be from there.

Re: Timing issue?? on 1994 Samurai

Reply #10 –
I know that you probably have checked for this, one time after a quadruple check on my wicked awesome job on valve adjustment, I crossed a plug wire and couldn't figure out for the life of me why it wouldn't run. Would start really crappy, then pop and die; I never told anyone this until now!

Re: Timing issue?? on 1994 Samurai

Reply #11 –
Yeah, it ran fine with the MSD ignition and blaster coil and did for years...I did unhook the MSD ignition incase the box was bad and it still didn't run...  I guess I need to see if I can beg borrow or steal an ECM to test in mine...

Re: Timing issue?? on 1994 Samurai

Reply #12 –

I know that you probably have checked for this, one time after a quadruple check on my wicked awesome job on valve adjustment, I crossed a plug wire and couldn't figure out for the life of me why it wouldn't run. Would start really crappy, then pop and die; I never told anyone this until now!

Yeah I checked the plugs too...  funny I thought I was alone in doing that...

Re: Timing issue?? on 1994 Samurai

Reply #13 –
I'd still suspect the ECM.
Does it run good enough for you to tell if the check engine light stays on while it's running?  If so, and the CEL is on, have you pulled the codes?

Re: Timing issue?? on 1994 Samurai

Reply #14 –
Can't get it to run long enough to throw a code...  actually won't fire and run at all...  Does show normal code though and that included the time I was able to actually get it running...

Re: Timing issue?? on 1994 Samurai

Reply #15 –
With it sputtering and popping, it sounds like you are off with your timing somewhere.  Like you are either off a tooth or two with the timing belt, or the distributor is off a tooth or two.  Have you had the distributor out, since it stopped running?
You say you have spark...is it a strong blue spark with a definite "snap" sound, or a weak yellow/orange spark with more of a "pop" sound?
Have you tried spraying starting fluid in the intake, while cranking?  Just to make sure it is not fuel related?
Engines aren't that complex in what it takes to make them run.  You need air and compression (which unless the intake is plugged up, or the valves are waaay off, you should be ok), you need spark (a good strong spark and at the correct time is what gets most people...weak/non-functioning ignition components, or timing components that are not phased/installed properly are the most common issues) and you need fuel (the proper amount).
Have you messed with the spark plug wires?  Are you sure they are in the correct places?
Did you do anything to the engine, wiring, or fuel system before you took it out to uwharrie last fall....like adjusting valves, changing any engine component (plugs, wires, etc.), changing the fuel filter, etc.....anything at all, no matter how insignificant you might think it is?

How to Set Ignition Timing on 1997 Suzuki X90

Source: https://bbs.zuwharrie.com/content?topic=114894.0

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