Technical 1980 model 2000 fi Losing power and backfiring

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Technical 1980 model 2000 fi Losing power and backfiring

blue ridge

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Advise needed I am a new Fiat owner and this is my first posting.
I have a 1980 model fiat spider 2000 with fi. I am a new owner but this spider is the second cute Italian I have had in my life, the first was a 77 308gt4. So I definitely understand how fickle a car can be. After about a week of driving my spider the control module went out. I replaced it as well as the distributer cap, rotator, pick-up, wires, and plugs. I cranked her and off she ran.
I talked to the dealer I purchased the car from and he told me the past owner did not know when the timing belt had been changed last so I ordered one and had it installed by a local mechanic, not my Ferrari guy that would quickly cost more than I paid for my new car.
When I drove the car with the new belt I heard something squeaking so knowing I had not replace my tension barring I took it back to the same mechanic and had him put a new barring in place. The car ran great for a few days then on my way home I heard a rattling sound from what I thought was from the back of the car almost like I had run over a stick and it got caught under the car. I pulled over and did not see anything or smell anything. Then I pulled off and the car got me home. It had very little power and it back fired several times. When I pulled the car into the garage the catalytic converter was smoking. After looking under the hood I noticed the cover for my timing belt was not completely closed and I could see the belt.
Dose any one have any advise on what happened? Losing power and backfiring to me means the gas and fire are not happening at the same time dose that sound correct? I am a little concerned of my next step because I do not want to cause any harm the valves. I would love any suggestion from veterans. .
 
Hi there. I'm not a mechanic but have an ongoing learning experience with the spider, I have a 80 fi 124 as well. Your belt might have slipped. I would check by doing the following. Line up the marking holes on the engine side of the cam wheels with the fixed markers on the cam towers.I'm not sure if this part is correct but I pull the lead of the dist. and very briefly turn the ignition the get the holes close and then do the rest by hand.Then check the crank wheel and see if the timing mark lines up with the fixed marker/pointer located on the pass. side of the block just above the crank wheel.You should be able to see this without taking the cover off. If the belt has jumped,the marks would be out of whack. Carfull, as evidently the aux. shaft has an excentric lobe on it left over from the 79 carb spider and the mech. fuel pump. if the belt slips to a certian point it might contact the #2 con rod & big noise results. I cut mine off When I did the engine.
I hope this helps and someone can confirm this check, as there is no shortage of expertise here.
Narfire
 
:confused:


It dose seem the timing has sliped. Dose anyone have any suggested reading if I tackle it my self. Thanks
 
I've used Brookands Books Fiat 124 coupe/spider and 2000 spider 1971-1984 manual. Page 66 gets into the belt change and how to set up the engine before putting the NEW belt on. How bad has it slipped? did the valves contact the top of the pistons? (bent valve stems) best to pop the cylinder head off,not really a big job,all can be done with engine in the car. Belt change if things go well around 3-4 hours,Im sure guys here have done it in less time.
Look on ebay(fiat spider parts on ebay) for the book or int. auto parts.
Perhaps some one might have a link you could look up on the computer.
Good luck
Chris
 
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