| View previous topic :: View next topic |
| Author |
Message |
Klinker
Flying Brick Rider
Joined: 28 Aug 2006
Posts: 876
Location: SD I-90
|
 Posted: Thu Aug 05, 2010 10:29 am Post subject: Leaky fuel injector |
 |
|
I assume I just need to replace the O-rings.
| Flying Duck wrote: | | Don't buy new ones from a BMW shop - get to a fuel injector shop. Much cheaper and probably newer. |
What size?
Is the job as simple as:
- Disconnect battery.
- Depressurize fuel system (at regulator?).
- Remove fuel rail.
- Remove injectors.
- Replace O-rings.
- Reinstall?
Any tips from someone who has done it?
_________________
tlp
1994 K1100RS
Only the Reasonists. They believe in an evidence-based world, something called Rationalism. But it's a tiny group, not so influential.
- Page Griffin |
|
| Back to top |
|
 |
Flying Duck
PsyKotic Waterfowl
Joined: 27 Jan 2005
Posts: 10102
Location: Bumf***, WA
|
| Posted: Thu Aug 05, 2010 11:19 am Post subject: |
|
|
Size: Take an old one with you.
If you're going to pull the injectors then be sure to use compressed air or a vacuum to clean around their bases as crud builds up there and can fall into the head when you pull the injectors if it's not cleaned out first.
If the bike hasn't been turned on lately then there's no need to depressurize the fuel system.
Why disconnect the battery?
New O rings will be tough to seat in the head and fuel rail. A slight coating of oil will help.
_________________
93 LT (x2)
94 RS
86-97 K75F(K75/100/1100 Frankenbrick)
86 K75C w/paralever, hi perf cams,TURBO!
91 & 92 K75Ss
91 K1
86 custom K100
14 WR250R
IBA #17739 (SS1K, BBG, 50CC)
Buy parts HERE |
|
| Back to top |
|
|
dave n
Flying Brick Rider
Joined: 13 Dec 2003
Posts: 316
Location: Gastonia NC
|
| Posted: Thu Aug 05, 2010 2:49 pm Post subject: fuel injection |
|
|
I have in my misc. file a note to use an o-ring injector kit for a BMW 318 I
auto - available @ Advance, Auto Zone etc. Never tried it - might be worth
checking into.
_________________
Dave Norris KOG 248
1999 Cagiva Gran Canyon
1993 K1100LT w/Hannigan sidecar
2008 Suzuki DR650 |
|
| Back to top |
|
|
Klinker
Flying Brick Rider
Joined: 28 Aug 2006
Posts: 876
Location: SD I-90
|
| Posted: Sun Aug 08, 2010 5:26 pm Post subject: |
|
|
| Flying Duck wrote: | | Size: Take an old one with you. |
Great idea. But time constraints meant that I had to get the new ones before I could tear into the injectors. Got 'em from the dealer. Ouch.
| Flying Duck wrote: | | If you're going to pull the injectors then be sure to use compressed air or a vacuum to clean around their bases as crud builds up there and can fall into the head when you pull the injectors if it's not cleaned out first. |
Clymer manual suggested this too. Did my best.
| Flying Duck wrote: | | If the bike hasn't been turned on lately then there's no need to depressurize the fuel system. |
True 'nuff.
| Flying Duck wrote: | | Why disconnect the battery? |
Clymer manual suggested doing so. I assume to reduce the chance of shorting something. I've seen a guy fry a BMU while fiddling in the guage cluster.  But I lived on the edge and skipped this step - no regrets.
| Flying Duck wrote: | | New O rings will be tough to seat in the head and fuel rail. A slight coating of oil will help. |
Sho 'nuff.
After the fuel system was reassembled, I started it up and was glad to see no more leakage. A hundred miles and 24 hours later, the garage doesn't smell like 91 octane any more.
For future reference to others looking to take this project on: No sweat. Nothing complicated about it. The actual O-ring replacement took less than a half-hour (but I am a slow wrench). Getting the fairing side panel off and on took more time.
_________________
tlp
1994 K1100RS
Only the Reasonists. They believe in an evidence-based world, something called Rationalism. But it's a tiny group, not so influential.
- Page Griffin |
|
| Back to top |
|
|
Ernie-NH
Flying Brick Rider
Joined: 14 Oct 2009
Posts: 982
Location: Bristol, New Hampshire
|
| Posted: Sun Aug 08, 2010 8:54 pm Post subject: |
|
|
Hi Klinker....
IF you have an Industrial Supply store nearby, you can get individual O-Rings in Viton (( 7mm is the ID size and 3.53 is the thickness of the ring ) FKM ) material ( ie: green or brown ) and the size is 7 x 3.52 mm standard. These injectors, whether Bosch, Siemens, or Denso all use the same size for 'worldwide replaceability'... Direct Injection injectors however require a different material and size due to heat and high compression forces.
Good luck...........// Ernie-NH
_________________
AMA,, American Deaf Bikers
Airhead Beemers Club
'11 G650gs
'95 K1100LT
'76 R100/7 |
|
| Back to top |
|
|
|
FAQ
Search
Memberlist
Usergroups
Register
Profile
Log in to check your private messages
Log in
