Oldsmobile cutlass supreme 1980, cant go over 15mph

[mickeypowa]

Hi guys!

My car has been sitting for maybe one year and was not able to start.

I made tests with plugs and I had no spark, so I changed the distributor cap, ignition coil and the brush/spring (which was rusty) and then eureka! I was able to start again !

So I tried to drive, as the idle was a little bit rough and stalls sometimes I was thinking driving would help.

But impossible to go over 15mph maybe, I have absolutely no power. The engine turn rough when I rev it and no power.

What do you think it can maybe ?
Maybe I should changed spark plugs ? Or what else ?

Thanks a lot

Mickey

 

[69hurstolds]

New spark plugs and wires surely can't hurt. What about fuel? Did you empty the tank and put new fuel in it? Bad gas could be an issue. Causes weird problems and gunk could clog filters, etc.

 

[bracketchev1221]

Start with the basics mentioned above.

 

[86LK]

rough when you rev it? yeah, go thru everything as mentioned above. fuel delivery, spark, timing, filters

 

[spongbob]

If your motor has a carburetor and I think so " take the breather ( air filter ) off and look around the chock arrange ment ....when familiar with its opening and closing movement then start the engine and try closing the choke more or less then giving ing it gas ( move throtle by hand open?) See what this produces ( does) with motor running ( closing choke by hand more or less) if the engine is then producing more power ,smoothly ,interpit the results with more choke better ? means it needs more fuel.. when if Opening chock some means improves running? it's flooding needs less gas.. a list for needing more gas follows 0. Look at new plugs see if there getting black tips already..? (If so proceed to TOO MUCH GAS below)1 fuel filter s one in carb front one under the car in the gas line...2. Bad vacuume leaks like the pvc hose or maybe a bad break booster A try plugging them off with plugsin the hose ect...3. Check the gasoline try replacing it with new. 4. Check for enough fuel pressure at the carb and color ( condition)of gas ect...5 have carb cleaned and or rebuilt...TOO MUCH GAS SUGGESTIONS...1 check is chock set to tightclosed then adjust it more open or temporarily wire it open somewhat...( for test)...is choke pullout working ?..2..carburetor may be letting to much gas inside it through a hanging or scotched float or bad float itself " if so get carb serviced or replaced. After checking the possible fuel issues its a good idea to check and see it your motor has jumped time a tooth or 2 this can cause a lose of power but Check tge stuff mentioned in previouse posts and anytime spark plug wires are 9 years old there just to old ...but may not fix other issues..if you find rust on yhe filters you probly need to take tank off and check to see how much is inside...or it could clog a new filter and it can stop a fuel pump too...if it helps to set your idle screw up ( while testing) ther on the left near the throttle bellcrank.. text back if you have a question ..post and pics like of what the spark plugs look like if your cars flooding youl see some black smoke useualy..hope this helps

 

[mickeypowa]

Hi guys !!

thanks for your help and time !

I changed the spark plugs, I had ngk ur5 which were black (see the photo) I replaced by ngk ur4ix (irridium and a bit hotter). I Started again but the problem is the same as before.

When I close the choke the engine stalls. Is it normal ? When I rev the engine, I see gasoline only in secondary barrel (where there is the choke blade) not in the primary. Is it normal ?

It seems I have gas pressure as we can see on the gauge. I am going to clean the gasoline filter but it seems already pretty clean.

I took some videos :

Video1
Video2

Edit :

I cleaned the little gas filter.
and here is a bottle of my gasoline coming from before filter, it seems perfectly clear.


thanks again

Mickey