Loose Fuel Injector -rough running

[kiwiape]

Something I was been made aware of recently, was a loose fuel injector (leaking air) on a BMW 650, caused no end of grief here with our dealer/distributors.

So if your 650 is a bit hairy, best we all check and make sure our injectors are tight and not leaking air as the BMW was.

 

[Norman Foley]

Oh, "Loose", as in not tight. I thought it gone at first!

 

[kiwiape]

Oh, "Loose", as in not tight. I thought it gone at first!

.....loose, lose, loss, lost the "o" doh!!. Request sent to Moderator for title correction.

 

[Nordland]

Something I was been made aware of recently, was a loose fuel injector (leaking air) on a BMW 650, caused no end of grief here with our dealer/distributors.

So if your 650 is a bit hairy, best we all check and make sure our injectors are tight and not leaking air as the BMW was.

Might or could be a reason for jumping/instable idle speed???

How can I check it?

 

[drzcharlie]

Parts 9-14 are the injector assembly and are located just beneath the lower half of the air box. Check the "o" ring part #12 for a good seal and look for cracks, Check part #14 the cir clip to insure it is seated properly and of course the bolts #10. As long as you are there check the hose clamps Parts # 15 for tightness

 

[Riding Again]

Can you use the old trick with carburetor cleaner to see if the idle picks up if you spray around it?

 

[glangston]

Injectors are usually tightly mounted.....I.e. Difficult to remove.
Pumps not so much.

 

[V8Astro]

Can you use the old trick with carburetor cleaner to see if the idle picks up if you spray around it?

That's how I would check it. That or a propane torch (not lit DUH!)

 

[Nordland]

Can you use the old trick with carburetor cleaner to see if the idle picks up if you spray around it?

Thank you! I meant a way without a lot of screwing.

 

[Nordland]

I have done the test with brake cleaner (same ingredients such as carburetor cleaner) and found no leak. Neither at the injector, nor at the rest of the injection system. Everything tight