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Engine overheaded and now it runs funny.

Discussion in 'Motors' started by Si., 15 Apr 2011.

  1. Si.

    Wise Guy

    Joined: 22 Oct 2002

    Posts: 2,387

    Location: Melbourne, Aus

    On my way home from work yesterday I split a radiator hose. I pulled over in a HUGE cloud of steam and coolant. I was stopped in a awkward spot fo rlet it cool a little then drove it a few hundred yards to where I could pull over (carefaully watching the temp gauge). Anyway, RAC man came, patched hose and I got home ok, however all the way home the engine was acting really bad, jumpy like it was misfiring. I checked the engine bay when i got home and obviously everything was dripping in water and coolant, battery, electrics, everything so i thought that was probably the cause and would be fine in the morning when it all dried out

    So today I drive it to the garage to get the hose replaced (or ordered, didn't have the part in stock until Monday) and the car is doing the same thing. It seems Ok once I get the revs up to say 2000, but when pulling away or changing gear it's jerky.

    Any ideas? Has the overheat broke something or do I just need to wait longer for it all to dry out?
     
  2. Lashout_UK

    Capodecina

    Joined: 2 Mar 2004

    Posts: 11,844

    Location: SE England

    Sounds like it's a damp HT lead/cap/plug (or coil, depending on car) causing a misfire at low speeds. It may improve of it's own accord, or you might have to take it apart and wipe everything down.

    What car is it?
     
  3. Si.

    Wise Guy

    Joined: 22 Oct 2002

    Posts: 2,387

    Location: Melbourne, Aus

    It's a Ford Focus.

    I was thinking the same myself, re-checked the engine bay earlier today and some of it is still soaking (I'm obviously not driving it until I can get a proper replacement hose on monday)

    Will it dry out it's self? or do I need to start stripping things down.. It's not a new car (done 135,000 miles) so don't want to spend an cash on it if possible.
     
  4. cooljimy84

    Hitman

    Joined: 28 Dec 2006

    Posts: 593

    Location: Epsom Downs

    depends how warm/windy it is. wouldn't hurt to strip her down (as i think u'll need to a little for the hose change)
     
  5. sigma

    Capodecina

    Joined: 13 Nov 2006

    Posts: 18,742

    Don't wait for it to dry out, dry it yourself!

    If it continues perhaps consider getting a compression test, sounds like you caught it in time though.
     
  6. Jamous

    Wise Guy

    Joined: 7 Jan 2007

    Posts: 1,074

    Location: Scotland

    The plug holes can fill up with water, remove the leads and take a look.
     
  7. Si.

    Wise Guy

    Joined: 22 Oct 2002

    Posts: 2,387

    Location: Melbourne, Aus

    Well, fitted the new hose last night and no leaks or anything, however it's still juddering/missing at times. I've checked the HT leads and they seem nice and dry. It seems to be ok on a nice flat steady road, but as the engine gets more under stress (accelerating, or going up hills) it gets worse.

    I've not had the plugs out (don't have the tools for it) so not sur eif there is water there.

    Any more ideas what the problem is? am I looking at a big bill?
     
  8. Building Candy

    Wise Guy

    Joined: 8 Nov 2006

    Posts: 1,280

    Just a note in case its not obvious, if you have lost a lot of water the temp sensor is usually in the thermostat housing, if you have no water it may well report its cool when the engine is actually hotter than the sun.
     
  9. Si.

    Wise Guy

    Joined: 22 Oct 2002

    Posts: 2,387

    Location: Melbourne, Aus

    Gulp...

    So damage could be worse than I thought..
     
  10. sigma

    Capodecina

    Joined: 13 Nov 2006

    Posts: 18,742

    So it idles OK?
     
  11. Westyfield2

    Capodecina

    Joined: 14 Dec 2005

    Posts: 12,494

    Location: Bath

    I'd guess (and hope) at damp leads/coil pack.

    But...
    Quoted for truth.

    Your temperature sensor is usually reading the temperature of your water.... so if you've got no water the temperature sensor will be reading cool rather than the real OMFG temperature that the engine is.
     
  12. Si.

    Wise Guy

    Joined: 22 Oct 2002

    Posts: 2,387

    Location: Melbourne, Aus

    When the hose first went it's idle was juddery, it's not bad now but still hickups once in a while
     
  13. Si.

    Wise Guy

    Joined: 22 Oct 2002

    Posts: 2,387

    Location: Melbourne, Aus

    After some goggling I think the coil (as people have suggested) is the next thing to check. Being non mechanical, how easy are these to remove and check?
     
  14. jimblowscash

    Wise Guy

    Joined: 18 Apr 2006

    Posts: 1,174

    Location: london

    Hate to say it but it sounds like head gasket..... take the oil filler cap off and look inside it... if it looks like mayo youve got oil in the water... also ( when cold ) take a peek in the expansion tank for oil...... the acid test is to take it to a garage and get it compression tested ( takes 5 mins ) and if youve lost compression the heads got to come off...
     
  15. Si.

    Wise Guy

    Joined: 22 Oct 2002

    Posts: 2,387

    Location: Melbourne, Aus

    Has the Oil cap off on Sunday, all was nice and clean, but not checked it since, will do that tonight.

    I think off to the garage it will be to get it checked over.
     
  16. Joshy

    Soldato

    Joined: 15 Jun 2009

    Posts: 5,011

    Location: London

    It can take a while for oil to emulsify and give classic Head Gasket 'mayo' so checking the oil cap probably won't tell much
     
  17. DM

    PermaBanned

    Joined: 11 Jul 2009

    Posts: 11,386

    Location: West Kingsdown, Kent.

    Mayo with chillie, Branston delicious.
     
  18. Joshy

    Soldato

    Joined: 15 Jun 2009

    Posts: 5,011

    Location: London

    You'll want to try that little mix with Head gasket mayo. Way better than Hellman's. Maybe throw in some wallet tears after getting the bill for fixing it and you'd be onto a real winner.
     
  19. DM

    PermaBanned

    Joined: 11 Jul 2009

    Posts: 11,386

    Location: West Kingsdown, Kent.

    You mix i'l sell it in a bottle, i got high hopes for you Josh, you know that :)