Help! Fresh Rebuilt, Misfiring And Suddenly Cut Off

[Mitsuboost30]

So let me give some background so theres enough information to make a proper assesment

full tank of gas been sitting for a year. recently put in gas treatment.

Did a fresh rebuilt

acl main and rod bearings

all new gaskets

n1 pump

my stock timing belt was in excellent condition so i reused it

Warmed oil up to go take the car out and seat the rings.

Pulled it out of the driveway and it started running rough

thought it could just be the gas so went on. as i went on coming to a stop i had to keep on the throttle so the car would not shut off.

Ran really rough so i turn around and procced to go home.

Pull it in the garage. and it is somewhat idleing on its own

Then out of no where it shuts off on its own like the power was cut. very abrupt.

I did have timing belt whine when the car was started, assuming it was alittle tight. but was told thats semi normal and would go away.

havent pulled the car apart in anyway. Its to late to do so.

Any ideas?

when it first happened my first thought was timing belt snapped. since the whine. But i dont think thats it after thinking logically. It just made me nervous as it happened so quick. No noise. Just cut off........ SIGGHHHH

Edited June 13, 2012 by Mitsuboost30

[Moodles2]

Did you actually set the timing?

[Mitsuboost30]

set the timing as in

set the motor with cylinder no 1 fully extended,

and match the markings on the cam gears to the timing belt and crank gear. yes

[Moodles2]

Confirmed with a timing light?

[Mitsuboost30]

No did not use a timing light.

If the motor is top dead. And all markings are lined up?

Car would idle fine. If timing was out of whack would it not idle different also?

[Moodles2]

CAS could be in the wrong position (retarded or advanced), need timing light to confirm it's set right.

I wouldn't trust fuel that's been sitting around for 1 year, I would barely trust it with my lawnmower.

[89CAL]

CAS could be in the wrong position (retarded or advanced), need timing light to confirm it's set right.

I wouldn't trust fuel that's been sitting around for 1 year, I would barely trust it with my lawnmower.

Yeah this

your marks may be lined up but that doesnt mean your timing is

[Mitsuboost30]

Is there any walk thrus on how to properly check timing?

[Mitsuboost30]

I'm going to drain the year old gas. Clean injectors, clean plugs and check gaps.

Will report back.

Any word and how to properly check the timing?

[Moodles2]

A good timing light, there is a wire loop at the back of the engine to the left of the cam cover hoses. If it's a cheap nasty timing light you will need to plug straight into coil #1, otherwise the nasty timing light will just read double at the wire loop.

[Mitsuboost30]

well.. i figured why it shut off...........

just from a quick look.... seems like cam broke! cant imagine my cam gear would be crooked like that for any other reason...

[Mitsuboost30]

so im kind of happy and at the same time very upset...

hopeing with the immediatte shutoff that i didnt skip timing and of damage anything and HOPEFULLY it will just be cam replacement.

what you gents think

[DVS JEZ]

Take the rocker cover off and have a look. Check if the cam marks are still aligned also

[Mitsuboost30]

I am planning on that tonight. After a saw that decided some beers were in order.

Will report back.

Thanks

[Kenna802]

I willing to bet that the timing belt is way too tight. Rule number 1 always never reuse the timing belt. If its like your fuel its sat there for a year as well. Setting base timing is different to adjusting timing when the car is running. Base timing is the three marks ( intake cam, exh cam and on Crankshaft) There are 3 notches you must set these to. To set tension of timing belt you must adjust the idler tensioner until its slightly lose and than spin the motor with the belt on a few times and the adjuster will go into the location that is correct for it. Tighten the adjuster and spin the crank a few times to make sure belt doesnt skip or the tensioner does not move. After that and fingers crossed no other damage has happened you reinsert the Cas and time it for 15 degress btc. I really hope you have not done any other damage as im guessing bent valves exhaust side :(

[Mitsuboost30]

Awesome info. Thank you

yea belt was def to tight. going to do compression test to see if valves are ok. (fingers crossed)

hopefully its just a new belt and cams.

[34GeeTeeTee]

Have you taken the covers off to have a look? I wouldn't be winding it over again until you check!

[Mitsuboost30]

I will be manually turning the motor over and pumping air into the cylinder instead of cranking with the key