| Author | Message | ||
     Preybird1 |
Hey guys what are the most common engine problems\failure of the x1 models. We got a bike with not enough compression to run it , and we were trying to get an idea of what it might be before we tear it all apart Any help will be appreciated | ||
| Jstfrfun |
Probably broken rings, or burned valves, but only the guy riding it will know for sure from the symptoms. | ||
| Sloppy |
Buy a leak down tester at your local auto store and it will tell you exactly what your problem is. No guessing required... | ||
| Yo_barry |
Just remove the head. Check out the head gasket and valves. Rotate the engine to run the piston to the bottom and have a look at the cylinder walls. It's pretty easy to do and you'll have to pull the head to fix anything with compression anyway. | ||
| Jos51700 |
I've seen some that seize a valve in the guide. Leak-down test, or teardown... | ||
| Buellistic |
Problems caused from adjusting the primary chain and drive belt too tight ... MYSTERY engine running problems from not changing the intake seals every two years ... | ||
| Preybird1 |
I was afraid of that. This bike just quit on me the other day, i had done some intake seals and put in some new injectors and it ran better than ever . Riding to work and it spluttered. And then it would only run on 1 cylinder, I am getting fuel into it spark and air. but compression is weak in front cylinder, The rear has a nice blast of compression when cranking, But front has a weak barley noticeable breeze coming out when cranking. I am going to try and borrow a bore scope, Or ill just break down and buy a leak down tester as i do need one anyways. Maybe ill just buy it for the shop and wright it off as shop tool. Thanks and keep em coming | ||
| Bad_karma |
Do a leak down test or start with a compression test. My 99 S3 holed the rear cylinder do to FI problems. Joe  | ||
| Preybird1 |
I don't like that pic wow that sucks, To bad its the front cylinder. I had a lot if issues with this bike 4th owner no maintenance in the primary major case wear from under adj, Chains slapping casing. New rear head temp, I suspect it was not running right for a long time, Then i got it fixed a lot of normal maintenance and it ran so good for a while then...Bam! I will fix it up real nice. It is too bad it was neglected, Will cost a bit but i like this bike enough to spend the money. | ||
| Preybird1 |
Ok i got a leak down tester on the way. Now how do you lock the engine? If i read correctly the motor has to be locked so it doesn't move when testing the pressure. What is the best approach to doing this? | ||
| Preybird1 |
Well i looked at some older pics of the intake seals as they were removed and the front seal was blown and i have no idea of when it was leaking but i suspect this weakened the piston and i installed race mods so it may have contributed to the current problem. I will know as soon as i get a leak down tester delivered, Then a total tear down. | ||
| Akbuell |
Simple way of 'locking' the engine: Put the bike on stands, rear wheel off the ground. Put trans in 5th gear. Plugs are out, of course, and rotate the engine so the cyl to be checked is at TDC. Install the tester, apply rear brake, and apply air pressure. If the air is leaking out the intake, it's the intake valve. Air leaking out the exhaust, it's the exhaust valve. If it's out the crankcase plug hole, then the piston or rings. If the primary cover is off, use the primary locking tool, or a socket on the crank nut. Hope this helps. Dave | ||
| Ratbuell |
Also, if the rear brake doesn't hold enough for you (like, torquing the stator nut), I've run a strap around both sides of the swingarm, binding one spoke of the wheel as I do it. You can do an "X" loop with the strap if you really need to hold it tight  | ||
| Preybird1 |
Nice i was wondering how to do this. Here is a pic of the intake seal removed on the front cylinder. http://i68.photobucket.com/albums/i20/preybird1/Im age012.jpg Now if i calculate this right there is probably about 4-5k miles put on this bike with this seal in this condition that i know of. Who knows how long before i got it, I am the 4th owner! thanks guys |
