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Possible Belt Jump On 850r


1996 850R

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just for kicksw and giggles, have you tried two different "old" wires on that cylinder? I'm just still leaning toward weak/no spark.

It was an old wire, but was working at the time.... now I'm feeling really retarded because it could be weak and I know Volvo's are touchy when it comes to caps, rotors and wires. Let me pull hair for a second......

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OK went back and followed from the beginning again. Originally it sounded like you had it extremely flooded and it was hydralocking. Anyway your problem exists on the #5 cylinder. May I ask what distributor cap you purchased and why not a rotor? What spark plugs your using? But honestly that should not make a difference if you moved stuff around. Honestly if you have done what you said you have and your sure you have good spark to # 5 cylinder ...really the only thing left is a vacuum leak at the intake runner. When it's idling spray carb cleaner around the intake port on #5 and see if the idle changes?

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OK went back and followed from the beginning again. Originally it sounded like you had it extremely flooded and it was hydralocking. Anyway your problem exists on the #5 cylinder. May I ask what distributor cap you purchased and why not a rotor? What spark plugs your using? But honestly that should not make a difference if you moved stuff around. Honestly if you have done what you said you have and your sure you have good spark to # 5 cylinder ...really the only thing left is a vacuum leak at the intake runner. When it's idling spray carb cleaner around the intake port on #5 and see if the idle changes?

I used a cap that previously worked, also cleaned the old one and tried that.... same problem. Rotor, spark plugs new. They are Champion plugs, which I know aren't Bosch, but they should of fixed the problem if it was the plugs... right? If I can find the problem, then Bosch it will be. Will starting fluid work on the intake runner?

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I used a cap that previously worked, also cleaned the old one and tried that.... same problem. Rotor, spark plugs new. They are Champion plugs, which I know aren't Bosch, but they should of fixed the problem if it was the plugs... right? If I can find the problem, then Bosch it will be. Will starting fluid work on the intake runner?

Don't recommend starting fluid. Better choices Silicone spray? WD40? Champions are fine...no Bosch plats.

From your above diagonistic process ..with out being there it surley sounds like a large vacuum leak at the intake runner? Only a guess

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If the oil was changed and you think it may be a dead lifter ... steady 2500 RPM drive for 5 to 10 minutes may correct it. Clean the plug first then drive it.

Drove car for a little and no improvement. Hear ticking around #5 cylinder. Sounds like a dead lifter may be the culprit. Will the Seafoam help?

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