Question about 2003 BMW R 1100 S BoxerCup Replica

1 Answer

Compression I took apart the top end to replace the old gaskets. When I put it back together I messed up and didn't get the timing right. I only realized this after trying to start it for 15 minutes and then going back to the manual. I went back and fixed the timing, now it turns over and the plugs are firing, but there is just no compression. I'm guessing that I've "fubar'd" the valves, but that's just a guess.

Posted by on

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    President:

    An expert whose answer got voted for 500 times.

  • Master
  • 2,712 Answers

Make sure you got the valve timing right Wink And then make sure you didn't slam a valve into the piston when you tried to crank it over before…

Posted on Nov 20, 2008

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

I have a 99 ktm 250 sx. Had to get cylinder replated and a new piston. I put the bike back together and oil was leaking from the front lower end of the cylinder and i wont idle. Took the bike back ap


If there is a leak in the head gasket it will never run properly. Maybe the carburetor is plugged if it has sat for a while. The gas/oil mixture can go bad over time. The leak could be from a loose gas line. Or possibly even oil dripping from the oil filter if you just cleaned and re-oiled it.

Aug 10, 2013 | Motorcycles

1 Answer

Yamaha atv bear tracker 250 timing set up


i need help please i have a 2000 yamaha bear tracker 250 i did a top job on it i replaced the piston and rings but didnt put a new head gasket i put it back together and she wont start soundss like it doesnt have enough compression any ideals and also i dont know how to set the timing can anyone help me out please

Jan 14, 2012 | Yamaha Motorcycles

1 Answer

I was changing the front disc brake pads on my 2008 Suzuki Boulevard S50. I took the two bolts out that hold the calipers together which caused the fluid to leak out and a small rubber gasket fell out ....


You will need to buy a new rubber gasket kit for caliper from suzuki shop
It is not usual to pull caliper apart for pad replacement, normally unbolt caliper off fork leg and lift of the disk

Jul 08, 2011 | 2008 Suzuki Boulevard

1 Answer

Yes i changed out the clutch on my 2005 1100 v-star when i put it all back together i can barly get it to turn over and backfired one time real load i even tryed to jump start it it still barly turns over...


Is this the first time you have done a job like this? its been a awhile since a have done a 1100 vstar but you need a new gasket if my trusty old brain severs me right it acts as a spacer for the cover so it dose not rub on the clutch basket.
http://fiche.worldofpowersports.com/wps/Yamaha_OEM/YamahaMC.asp?Type=12&A=495
this is a link to the micro phish for your bike
check it out and let me know
Mark Woodring

Jan 23, 2011 | Yamaha V Star 1100 Silverado Motorcycles

1 Answer

Hi, I just bought a stock 2003 ttr 125. The bike had been sitting for years and barely would run. I took the air filter out and it was full of gasoline. I took the carb apart and cleaned all the gummed...


Piston rings may be sticking after sitting for so long. It may serve you well to remove the top end, paying special attention to the timing alignment as you do. Visually inspect the piston and rings. ensure the rings can move freely in their grooves. Look at the piston for signs of blow-by. A burned up surface of the piston that extends past the rings onto the skirts. You may simply re-ring this machine and it would solve your problem if you view these problems.

Nov 22, 2010 | Yamaha TT-R 125 E Motorcycles

1 Answer

Two weeks ago, I started my own project and I'm totally new at this, so I need some help. I heard a clunk sound every time I started the bike and it would go away once the engine warmed up. Talking to some...


Check the timing on the bike and make sure that everything is at top dead center when you check the valve gap. Otherwise, I think your neighborhood mechanic is probably correct.

Nov 13, 2010 | kawasaki Zephyr 750 Motorcycles

1 Answer

I have a 1991 honda cr 250 I cant get to start at fist gas ran right thru carb and out bottom i took carb apart and got the floats to stop sticking cleaned it out with carb cleaner put back together but...


try a new spark plug. if u fowl out a plug some time they will not fire under compression.2 strokes need. fuel,fire and air, very simple engines.it is possible crank seal are bad .that doesn't allow the engine to create vacuum in the crank case.thus fuel and air will not make it to combustion chamber.

Jul 11, 2010 | 2002 Honda CR 250 R

1 Answer

1985 XR 200 ALL TIMING MARKS SEEM TO BE RIGHT, HAS FUEL ,HAS SPARK .BUT WILL NOT START


By "all timing marks seem to be right", are you talking about the timing marks on the alternator rotor or the camshaft timing marks? A 1985 model is a pretty old bike. If it has never had a timing chain or the adjuster guides replaced, you may need to address this issue. Not only do you need for the ignition timing to be correct, you need the camshaft timing to be correct as well.

In your problem line, you stated that you had fuel, and spark. You need three things to get any engine to run, fuel, spark, and compression. Do a compression check on the engine. If the compression is low, it won't start either. Three things can cause low compression. Bad rings, improper camshaft timing, and valves not seating properly.

If you want to get the bike running again, I would suggest you do a "top end job" on the engine. Pull the head and cylinder. Measure the cylinder for wear and bore for a new piston if necessary. Replace the rings. Have a valve job done on the head at a local machine shop. When you put it back together, do so using a new timing chain and adjuster slides. You'll be surprised at what a "New" engine feels like. Good Luck!

Jan 31, 2010 | Honda XR 200 Motorcycles

Not finding what you are looking for?
2003 BMW R 1100 S BoxerCup Replica Logo

Related Topics:

149 people viewed this question

Ask a Question

Usually answered in minutes!

Top BMW Experts

Arnie Burke
Arnie Burke

Level 3 Expert

4497 Answers

yadayada
yadayada

Level 3 Expert

64052 Answers

phil cuzins
phil cuzins

Level 2 Expert

79 Answers

Are you a BMW Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...