Question about 2001 Ford Focus

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Car has a miss fire on one of the pistons bust some times it run ok. and sometimes it installs and dosent want to turn on.

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  • Ford Master
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Change the coil pack ,not expensive about 70 euros

Posted on Oct 12, 2010

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My 4 cylinder seems to miss fire in a cylinder sometimes when iding-127k. symptom is the car shutters while stopped intermittently while stopped from engine.......dosent happen always though. Thanx!


when was the last time engine serviced ? try a fuel addative , get one that covers the catalytic convertor , this will clean away the carbon deposit build up etc and improve the running of the engine management system sensors etc, also have the OBD codes read as should tell you which circuit may be causing an issue

Jul 01, 2014 | 2004 Chrysler Sebring

2 Answers

Missing some times bad sometime ok


battery losing charge or a little more serious your alternator is about to pack up simple test charge your car battery and try again alternator thats a job for a mechanic or it could be a dirty carburettor is it ticking over or just miss fireing if its miss fireing its your carb if its not ticking on key turn its your alternator and quite possibly your battery to

Sep 27, 2012 | 1999 Nissan Quest

1 Answer

C22ne,engine missing, and running very rich, new plugs and leads.miss isnt constent but over all cylinders, engine light on,


hi i had this problem my self not all of 2 weeks ago rebuilding a holden rodeo c22ne motor had bad miss new plugs will do you no good on this one
in my case the side of the piston had cracked the three ring holes right threw leaving only the oil ring intact in this case if you have replaced coil and spark plugs and all sensors its almost betting to be a busted piston do a compression test to see your pistons should be around 190 psi if number one is down a long way ie in my case 50 psi its about $250 to fix your self and you have to buy all pistons no use buying one only

Jul 07, 2011 | 2002 Isuzu Rodeo

1 Answer

Car sometimes starts hard like 1 out of every 5 starts and runs rough most times may even die out acts like a miss dies every time it is put in gear unless u foot brake it every so often you start it and...


try putting some injector cleaner into the gasoline tank because sometimes your fuel injectors do get clogged up and needs to be cleaned to allow the lower 87 octane through the injectors. Some of the times that the timing belt has been changed and misses with the timing with the piston heads and valves which opens and shuts while the gasoline fuel is being put into the piston heads chambers so if your timing is off would cause this similar problem as well.

Jun 04, 2011 | Chevrolet Caprice Cars & Trucks

1 Answer

I have a 2002 525i bmw, sometimes when i crank up the car a big pile of smoke comes out, and thens goes away. the car runs great sometimes and then sometimes when i make a turn i can hear the valves rattle...


It doesn't have to run hot to be blown. Sounds like you have oil getting into one of the pistons when you make that turn. After a couple of times, it ruins your plugs and that's why you're getting a mis-fire. It sounds to me like the engine itself is blown. The pistons along with the plugs are firing (burning the oil that gets into the cylinder walls. It's time to look into a rebuild.

Jan 06, 2010 | 2001 BMW 325

1 Answer

Shut off during driving and back fired so bad it busted the muffler,I believe it is the timing belt/chain. All it will do now is turn over and let out another back fire


I think you are right. Dont crank on it to much, it is possible to bend the valves on some motors because the piston hits the valves. Lee
please vote if this was helpful or not

Oct 12, 2009 | 1994 Isuzu Rodeo

1 Answer

02 mazda protege doesnt have any power and it has a knock to it like it missing firing


Well thenRemove 1 plug lead at a time and when the missing stays the same and dosent miss on 2 then you have the correct cylinder OR it could only be the plug faulty or lead ,but if none makes any differance then the knocking will be something else like Tappet lack of oil ,, valve hiting a piston, or timing moved.
Try all of the above and let me know how you get on . Ron

Oct 11, 2009 | 2000 Mazda Protege

3 Answers

1991 toy camry 2.0 My car was running good. Had oil leaks. I changed valve cover gasket and dist o ring. Made mistake of not marking Dist. location. I put back together started but missing very bad....


check the condition of the contacts on the cap if worn replace cap,check the the ignition coil out put on both the primary and secondery curcuits

Sep 27, 2009 | 1991 Toyota Camry

1 Answer

Belt busted not running right


Not good to run them without a belt as it won't turn the waterpump. You may have messed something up when you drove it that far. Sounds like something may have happened to an exhaust or intake valve which is why you are getting missing and back firing. Check your compression on your cylinders.

Mar 07, 2009 | 2002 Chrysler Town & Country

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