Frankieoboy, thanks for the info, those are definitely the two cylnders that weren't firing (4/7) and if your sitting in the driver seat looking at the engine through the fire wall at the coil packs it would be the left coil pack, (4/7) are the bottom half of the left coil pack.
Thanks for the info, I keep looking through the tech manual and see a crank shaft sensor and a cam shaft sensor (could it be one of those?)

Thanks again everyone!

Rich

 

Any help on why no spark is still appreciated.........

 

It is a pain in the ****, but try switching the coil packs to the other side. If it changes to two other cylinders then you know it is the coil. If it stays at the same cylinder, then it most likely is the wires. My guess is that the coil is bad or you don't have the wires connected properly.

 

I am having a similar problem. I replaced all 8 spark plugs and wires on my '99 Disco II but am still having the following fault codes after 150 miles worth of driving:

P1300 - Multiple Misfire
P0304 - Cyl 4
P0307 - Cyl 7
P0300 - Multiple misfire, excess emissions
P0308 - Cyl 8

Note that the vehicle seems to be running fine. There is no roughness or lack of power.


Thanks!
Jon

 

Last resort, I would suggest changing the coil again.

Can they be swapped ?

I had one failing just after 6 months on another vehicle.

 

Ralph / Frankie

Thanks for the great Idea. Not looking forward into climbing up in the beast again, but this would/should solve the question on the coil pack easy enough.

So I have went on vacation, had an earthquake, and a hurricane and all the clean up over the last 3 weeks ish, this weekend should be back to work on this issue! I'll post results after the test.

Thanks again for the great suggestion!

Rich

 

Ok latest status finally found the time to swap out the coil packs and I am still getting the 4 and 7 misfire, double checked the brand new wires and hook-up.

Here is a recap of what I have gone through

Started getting a 4/7 cylnder misfire code
changed the 4/7 cylnder coil (still misfired)
changed the wires (still misfired)
changed the spark plugs (still misfired)
swapped the two coil pack (still 4/7 misfired)

Any suggestions are appreciated?

Best Regards
Rich

 

Send me your number and lets talk mis-fires.

 

Reviving this post - I have the same codes - did we ever find out what the solution was?

 

...only if Mike took notes from the call. The original posters was last logged in 10-30-2011.