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05-19-2008, 07:51 AM
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#1
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CF Enthusiast
Join Date: Feb 2005
Location: Somewhere in the Alps, Location unknown.
Posts: 135
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Ford Laser help again!
As some of you may know I have been trying to restore my car back to show room condition. The only problem now is the engine dies when idling. there is alot of black smoke that comes from the exhaust pipe. The spark plugs are always coated with carbon they are totally black. I have changed the engine, throttle body and oxygen sensor but the problem persists. I really need your help guys 
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"All units be advised, be on the look out for a black sports car, last seen going airbourne near the highway overpass. The SPEEDER is travelling at well over the speed limit, pursue with caution"
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05-19-2008, 08:02 AM
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#2
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CF Enthusiast
Join Date: Feb 2005
Location: Somewhere in the Alps, Location unknown.
Posts: 135
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"All units be advised, be on the look out for a black sports car, last seen going airbourne near the highway overpass. The SPEEDER is travelling at well over the speed limit, pursue with caution"
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05-21-2008, 01:43 AM
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#3
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CF Addict
Join Date: Feb 2008
Location: williamsport,PA
Posts: 277
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it sounds like a malfuctioning FCU (fuel control unit)or module. Its jetting out more fuel than it should be.
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05-21-2008, 03:24 AM
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#4
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CF's resident Nurse
Join Date: May 2006
Location: Northeastern NJ Needs: A Life
Posts: 513
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Quote:
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Originally Posted by DARKtEAGLE
it sounds like a malfuctioning FCU (fuel control unit)or module. Its jetting out more fuel than it should be.
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the symptom seems to point to it running very rich, but to conclude that it is the FCU just from one symptom is a little far fetched.
Wait, speeder, did you say you changed the engine?? |
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05-21-2008, 04:58 PM
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#5
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CF Enthusiast
Join Date: Feb 2005
Location: Somewhere in the Alps, Location unknown.
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Quote:
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Originally Posted by dvdrose18
the symptom seems to point to it running very rich, but to conclude that it is the FCU just from one symptom is a little far fetched.
Wait, speeder, did you say you changed the engine??
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Yep. The main reason i changed it because problem was much worse in the old engine. It used to jerk violently and used to do 22 mpg. For a 1.8!
I replaced it with an identical engine but not ford. It was from a Mazda lantis I think. It was a reconditioned engine.
The fuel usage now is still quite bad. i got the air filter, spark plug cables and distributor checked out and its all fine. This problem has been going on for about 5 years. The ford guy's in all their wisdom are all puzzled by this. They first told me it was my throttle body then my oxygen sensor or air fuel sensor that was faulty i changed both but same problem. Last week i got the spark plugs cleaned cause they were totally black, so far not much trouble from it. But I want a permenant solution guys please help me out.
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"All units be advised, be on the look out for a black sports car, last seen going airbourne near the highway overpass. The SPEEDER is travelling at well over the speed limit, pursue with caution"
Last edited by speeder : 05-21-2008 at 05:00 PM.
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05-21-2008, 04:59 PM
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#6
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CF Enthusiast
Join Date: Feb 2005
Location: Somewhere in the Alps, Location unknown.
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I also changed the fuel pump recently replaced the standard ford part with a Bosch part.
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"All units be advised, be on the look out for a black sports car, last seen going airbourne near the highway overpass. The SPEEDER is travelling at well over the speed limit, pursue with caution"
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06-18-2008, 08:28 AM
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#7
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CF Enthusiast
Join Date: Feb 2005
Location: Somewhere in the Alps, Location unknown.
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I recently took my car to my trusted mechanic to change the air filter. He said that the problem is because my ECU maybe malfunctioning. He said it maybe due to the flooding that happened sometime ago. My car was submerged till the hood. What do you guys think? His he right or is it a case of trial and error?
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"All units be advised, be on the look out for a black sports car, last seen going airbourne near the highway overpass. The SPEEDER is travelling at well over the speed limit, pursue with caution"
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06-22-2008, 12:11 AM
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#8
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CF Extraordinaire
Join Date: Mar 2004
Location: Somewhere in the Southeastern U.S.
Posts: 1,067
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ECU's are not too fond of water -
Neither are the various electronic sensors and actuators used in a modern engine management system
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06-22-2008, 07:11 AM
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#9
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CF Enthusiast
Join Date: Feb 2005
Location: Somewhere in the Alps, Location unknown.
Posts: 135
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Quote:
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Originally Posted by tbaxleyjr
ECU's are not too fond of water -
Neither are the various electronic sensors and actuators used in a modern engine management system
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But if it is the ECU shouldn't it give trouble all the time? My car doesn't, there will be times when it runs for a few days with no problems. But the consumption is bad with or without the engine trouble. Which other electronic components do you think could be malfunctioning? The air fuel sensor and throttle body have just been replaced recently. A few days now i have noticed the smell of petrol from the engine bay, it's quite strong. Had it checked but couldn't find the problem. 
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"All units be advised, be on the look out for a black sports car, last seen going airbourne near the highway overpass. The SPEEDER is travelling at well over the speed limit, pursue with caution"
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06-22-2008, 07:37 AM
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#10
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CF Enthusiast
Join Date: Apr 2008
Location: Boonies of NH
Posts: 195
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O2 sensors often control the air/fuel mixture. My mechanic told me when I was having a misfiring problem. I told him I went through a big puddle and it stalled on me one day when we were flooded up here and he said if water went through the motor onto the sensor it would mess with the mixture and cause the issue.
It wasn't the actual problem, but it's possible, especially if it is running rich and smelling of gas.
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