Results 1 to 5 of 5
  1. #1

    Aftermarket Paper Fuel Filter Caused A Massive Lean!!!!!My Fault!!!!!Fawkkkkkkkk!!!!

    its been a while since ive been on here and i Just wanted to i took out my Yami 2stroke XL1200 yesterday and knowingly I should of changed the aftermarket inline paper fuel filter....(it got gummed up with premix from last season)....every season i change it....but i thought in my dumbass way of thinking " hey it'll be ok for a couple hours" Gawd Damit!!!!ruble ruble ruble!!!!! So it leaned out all three carbs and my compression is 60-65ish across the board......well anyways looks like only the rings took the hit......already ordered some and i took the engine apart last night.....ill post up pics in a few..

  2. #2
    This is how I run a jetski shop in the desert nmpeter's Avatar
    Join Date
    May 2008
    Elephant Butte New Mexico
    the chatter about the dangers of paper based fuel filters in PWC is often bandied about in the forum

    go with a nylon mesh filter and get some new gas cans if they are metal.

  3. #3

    Join Date
    Apr 2012
    Indian Trail, NC
    What did the cylinders look like with damaged rings? I have a SUV 1200 with uneven compression with Cylinder #1 at ~100 psi, Cylinder #2 at ~g110psi and Cylinder #3 at ~120 psi. I used a endoscope camera and I see some vertical gouges/scuffs in the cylinder walls and something that looks like a rust stain on the cylinder walls in the front two cylinders. This is an SBT engine that has never run right. The ski ran around 43 mph when purchased, I figured the pump had big clearances. Rebuilt the carbs due to leaking fuel at fuel pump with Mikuni kits. Last time I took it out it would idle in the water fine, but would bog when giving it gas. Looks rich but may be lean?

    Any advice greatly appreciated.

    Attached Thumbnails Attached Thumbnails Click image for larger version. 

Name:	IMG_6930.JPG 
Views:	114 
Size:	97.1 KB 
ID:	451066   Click image for larger version. 

Name:	IMG_6931.JPG 
Views:	132 
Size:	126.0 KB 
ID:	451067  

  4. #4
    Myself's Avatar
    Join Date
    May 2007
    North Central Arkansas
    Yep, heard the stories for years but actually saw it 2 years ago on a Kawi 1100. All stainless micron screens for me.

  5. #5
    This is how I run a jetski shop in the desert nmpeter's Avatar
    Join Date
    May 2008
    Elephant Butte New Mexico
    by the way, the paper filters used in automotive applications are on the other side of the fuel pump, so they were less likely to restrict fuel flow when they were exposed to water before ethanol became a common fuel additive

    yeah, I'm that old.

    tamaha pwc fitlers ARE actually paper, but treated for marine apploications

    aftermarket yamaha filters are ok to use in a pinch, but the mesh filters do the job unless you need to strain your gas thru a ten gallon hat for some reason.

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. Aftermarket fuel pump. What filter? sho svho
    By ctct2118 in forum Yamaha PWC Performance (4-stroke)
    Replies: 8
    Last Post: 10-25-2018, 11:41 AM
  2. aftermarket fuel filter?
    By joediveguy in forum Kawasaki PWC Performance (4-stroke)
    Replies: 1
    Last Post: 01-07-2017, 02:49 PM
  3. aftermarket fuel filter for ULTRA 250-310
    By ANTONYUK in forum Kawasaki How To & FAQs
    Replies: 13
    Last Post: 03-27-2015, 04:23 PM
  4. R12X aftermarket fuel filter
    By mxr515 in forum Honda Open Discussion
    Replies: 2
    Last Post: 12-21-2013, 05:15 AM
  5. Aftermarket fuel filter?
    By lt1transam in forum 2-Stroke Performance
    Replies: 10
    Last Post: 05-14-2008, 05:58 AM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts