Ford Owners Club - Ford Forums Messages

Club Announcements

Discounted Car Insurance: Owners Club insurance could save you money on your car insurance. Get a quote

Review your Ford: Help others when it comes to buying a car like yours and review your Ford now

Ford Car Parts: View All ford car parts by category. Look for Ford Car Parts now!

AdBlock Warning

Parts of this website do not function properly with AdBlock enabled on your device. To get the best user experience on our website, please disable Adblock for this website (domain) on your browser.


willip2

No Spark At Plug

10 posts in this topic

Hi Can any one help please, fusion 2002 1.6 petrol, will work fine for weeks then just will not start. Go back next day and it runs fine.

Tried changing crank sensor and coil pack to date still same problem. Resting plug on engine produces no spark when cranked over.

Could this be an alarm/imo problem? tried disconnecting battery and using spare key. At the moment cant get it to garage recovery will not come out unless its a mile from home.

Share this post


Link to post
Share on other sites
 

Hello, if it was the immobiliser you should see the lock symbol flash when cranking the engine.

I would start with the battery, is it the original ? It may just be that the voltage drops significantly enough when cranking that there is not enough Low Tension to the coil pack to produce a spark.

Motocraft batteries fitted around that age were Low Maintenance ones, Opaque white in colour with accessible cell caps, if so removing the battery you will see min/max marking for for the electrolyte level.

Share this post


Link to post
Share on other sites

Thank you for reply, The battery is good and will give 20 plus good engine cranks before slowing down surely enough power there.

I have just checked and lock symbol stops flashing when key is turned. I will swap battery from my other car and try but I am not confident that is the problem.

Share this post


Link to post
Share on other sites

Its a starting point, with any intermittent or odd problem, start with the basics and work forward.

Share this post


Link to post
Share on other sites

ok tried another battery with same results. I put a spark plug into a lead and cranked to test spark is that test ok these days?

Share this post


Link to post
Share on other sites

Yes, so next step would be to check any fault codes logged.

Share this post


Link to post
Share on other sites

no fault codes showing RAC guy put his hand held on.

Share this post


Link to post
Share on other sites

ok tried another battery with same results. I put a spark plug into a lead and cranked to test spark is that test ok these days?

Yes, but the rocker cover may be made of some sort of plastic material/ an insulator

Did it just suddenly stop working for no aparrent reason (not after work done on the car?)

try gapping the plugs down - a narrower gap than recommended but not closed (the spark always finds the easiest route- like lightning -)

was it new coil packs or secondhand? how long ago/ mileage scince they were done/ same with HT leads (do these come with the coil packs?)

its possible it needs coil packs again (or something already replaced needs done again)

Share this post


Link to post
Share on other sites

Thanks for reply, new parts fitted yesterday, problem has been going on for months. plug spark tested against steel not plastic.

ok now discovered no voltage to coil pack (relay problem?)

Share this post


Link to post
Share on other sites

Great find, I'm sure the 12v comes from the ECU but I don't have access to any wiring diagrams at the moment.

I have a schematic pinout diagram from the ECU, if anyone else has it perhaps they can assist you.

It'll be late Sunday or Monday before I can get to them.

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!


Register a new account

Sign in

Already have an account? Sign in here.


Sign In Now