gents,

i have 2010 grand marquies which same engine of crown victroia

i have a low vaibration in the engine, i changed the sparks+coils but still no improvments!
So what do you think ?
also if the fuel is low check engine start flushing but if the fuel is above the mid there are no flushing!

any one have any advice?

thanks

 

if the cel is flashing the engine is misfiring. get the codes read and post them here.

 

computre shows problem in number#7 but the workshop says i can not know its spark 7 or coil 7 or injector 7 i have to change them all !!

all my sparks and coils is new man !!

 

Good Morning Guys,
If I may, you might try switching #7 coil, or plug, or last but not least injector with another cyl and see if the problem moves to the new location.

Sometimes NEW stands for never ever worked.

 

that is sad diagnostics, not to mention costly. mode 6 data will show misfire counts for each cylinder. you are at the wrong shop.


so the code was what? p0307? it would be helpful to know all the dtc before offering advice or else we chase the wrong problem.



if you are sure the misfire is on cyl 7 only. the next step would be a compression test.
if you want to a quick check of the injector; a noid light check or listening for the injector to click with a mechanic stethoscope will tell you if the injector is opening.

 

thank you guys for your helps

yes the code is p0307 misfired

can you tell wheres no#7 ?

if i am in the front of the car and the bettery on my left hand and the air filter on my right hand how can i know which is coil #7 ? might be i have to deep check it
so help me on that and i wall work on it

thanks alot for all helps

 

look at both cylinder heads. the one head closer to the front of the car would be the 1234 cylinders. the other head will be 5678 with 5 towards the front and 8 at the back.

 

Please recheck for #7 , I believe it is on the left side 3rd one back. Ford usually starts with #1 on the right bank.

 

Thanks man i found it.

i checked coil7 i found a Old oil at the top of the coil but inside the spark no oil
only at the top(head of the coil#7)

 

you found old oil on a new coil you just installed?