No spark at spark plug?

1997 FORD EXPLORER
153,000 MILES
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TONY45UK
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  • 4 POSTS
1997 Ford Explorer SOHC UK spec

No spark at spark plug. all relays ok. petrol pump running. checked cut off switch ok. spark plugs fine. engine turns over but doesnt fire up.
recent bad timing chain noise.
indicator for immobiliser on dash turned red when the car was running? reset it drove ok next day same thing, turned engine off restarted ran ok.left car overnight and next morning wouldnt start.

can u assist
Feb 20, 2012 at 3:40 AM
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KHLOW2008
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Did you check for trouble codes?
Feb 20, 2012 at 5:29 AM
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TONY45UK
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khlow my car is up and running thank you I have owned this car for fifteen years will now have timing chains and h lifters done with renewed confidence thanks to you guys should I consider new oil pump should i consider replacing given vehicles age? any suggestions are most welcome thanks again
Feb 20, 2012 at 11:43 AM
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TONY45UK
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toany45uk forgot to state the car uses no oil and compressions are fine dohave a problem with oxygen sensors no reading on computer scan ie dead I believe ford uk did this many years ago to stop engine managementlight coming on common fault then due to gaskets taking air problem unknown to me till now
Feb 20, 2012 at 12:11 PM
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KHLOW2008
  • ✓Experienced Mechanic
  • 41,812 POSTS
The oil pump is a component that seldom gives any problem as it is lubricated all the time and the only way it can go is due to lack of oil changes. If you have replaced the oil regularly, there is nothing you need to worry about.

I do not know which engine you have so I don't know if it is chain or belt driven. For any part that you work with, if there are any seals, get them replaced as seals ages overtime and deteriorates.
Feb 21, 2012 at 4:25 AM
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