Sorry if post is lengthy but I wanted to give all details as some small detail here may be important to a tech reading my post. E225DHLSCH - s/n 05232575 warranty not in my name yet but will be very shortly if you check.
Was fishing a tournament last weekend and about 3/4 through day we came off plane, fished an area and when we started back up the motor instantly idled with a noticeable miss or issue like that. Motor sounded horrible and would not jump on plane. Checked it for operating sound again to see if it sounded mechanical, did not seem that way. Checked for wire problem etc on the water and no issue found. Started up engine and with partner on very front of bow we gradually pulled on to plane (about 1 minute) BUT only could get 3800 RPM max so I came back off plane and idled back to ramp about 5 miles away.
When I was back to the shop I used my timing light and ignition tester and found that all cylinders except #3 were firing properly. Cylinder #3 was showing firings of 1800 times per minute. Made sure coil etc was grounded good and rechecked, same thing. Was thinking plug or maybe coil.
Next morning I bought all new plugs, QC10WEP and indexed them after gapping to 0.30. Please note, from factory this engine had QC8WEP plugs but books and specs state QC10WEP plugs. Noted that all plugs were very carboned up except # 6 which was normal looking. I wrote this off as OK since the previous owner who ran it for three months or so had 67% of all run time at idle so new plugs were a good investment. Total time was 111 hours from previous owner. When I tested firing again all cylinders had proper firing (500 at idle) Was hoping that I had it as an easy fix.
Finally got back to lake yesterday for a prefish and this was the first time I had it out of garage since plug change. Let engine warm up as usual, did not sound completely right but I gave it a try anyways, was the same if not worse, actually bad enough to vibrate the engine and make me worry as the new vibration sounded like a rapid clunk clunk.To be safe I did let engine idle a fair bit off and on and tried it one more time to be absolutely sure, would not power up well and thinking of getting on plane was nothing more than a dream!
Tonight after work I removed plugs to test compression. Voila, all plugs were filthy black again after less than 30 maybe 40 minutes of idle run time etc. EXCEPT plug #6 (lower plug on port side) This plug looked brand new barring the little drop of oil on it. My thoughts are that I have a bad injector as my biggest issue, thoughts?
Compression was 120 on all cylinders though I will want to recheck with a better compression tester as mine has been around the block a few times.
Not sure why #3 fired badly.
Not sure why timing indicated 13 degrees at idle as I checked that as well.
Not sure why no code came up on my system check. When I checked the EMM I had three of the four lights lit up solid red. Looking at the EMM the top light was on, the second from the top light was off and the bottom two were on, no flashing lights with key on engine off.
Any other input or ideas? Concerns?
Motor has been booked into my closest shop for a scan Thursday AM, hope everything goes well for me and my engine.
Last thing, are the injectors on my 2008 different than those usd on an 2007?
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Yeah, that is as clear as mud.
BRP was involved with the tech and we are now just waiting for the parts to get shipped in from the US.