Ga door naar hoofdinhoud

Repair guides and support for motorcycles manufactured by the German motor group, BMW.

18 Vragen Bekijk alle

Why wont 1985 bmw k100 stay running

have 1985 bmw k100. turn key, hear fuel pump. press starter, bike starts right up, then sputters and dies. then hear fuel pump again, will start right up again, sputter and die. when engine starts, i dont hear fuel pump. I have changed the ECU and the fuel pump relay.

Beantwoord deze vraag Dit probleem heb ik ook

Is dit een goede vraag?

Score 0
Voeg een opmerking toe

2 Antwoorden

Het nuttigste antwoord

Too many causes to provide an "answer". On the K's the pump is wired off the level sensor.

I'd lift the pump out, disconnect both + & - wires (put hose over ends=no sparks) and directly put wires on the pump, - to ground & hold the + to the battery just as you start the engine.

This will parse a mechanical vs electrical problem.

If it runs ok, it's electrical: get the Clymer manual (M500) to trace power wiring.

If it still sputters & dies, I'd put pressure gauge inline of pump to injector rail. It should be ~38psi.

The regulator may be bad (pinch the hose of rail to regulator to see), but more likely the pump can't keep up.

I've build 3 K bikes from wrecks and worked on many others.

Was dit antwoord nuttig?

Score 1
Voeg een opmerking toe

Yes—This could be caused by many things. —- Also consider faulty Hall Effect Sensor, which is used as a crankshaft position sensor. Their failure is not uncommon in older K100s.

Was dit antwoord nuttig?

Score 0
Voeg een opmerking toe

Voeg je antwoord toe

bryan christensen zal eeuwig dankbaar zijn.

Afgelopen 24 uren: 0

Afgelopen 7 dagen: 4

Afgelopen 30 dagen: 14

Altijd: 1,462