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Old 01-10-2010, 04:36 AM
Matsuda 9's Avatar
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guys,

had to pull my dizzy (snapped the mounting bolt), replaced the dizzy, now have a knocking in it... strange never had that in my life, so pulled it again - refitted.... still knocks, sounds like a diesel

Ideas?

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Old 01-10-2010, 04:50 AM
NoD NoD is offline
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maybe its not seated correctly in the upper shaft end?
or the lower and upper part of the dizzy came loose?
or maybe the rotor is eating the cap?

could you describe the knocking sound?
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Old 01-10-2010, 06:14 AM
Matsuda 9's Avatar
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it sounds like the rotor is hitting the cap (at some point) pulled it checked no indication

made sure it sitting tight, pulled it out, refitted, no play..... (has some play back and forth, did it always)

the funny thing about these bustards is that if they not sitting tight there is oil all over the joint, mine does not have a drop......

the sound speeds up with the revs (so it has to be mechanical)..... car pulls like a monster though. does not sound like its pining (does not have a ring to it)

listened to it on the valve covers, just echoes there.

can timing belt idler echo that hard through the belt through the cam gear into the dizzy??? (this so far fetched that it makes my head hurt)



the sound is like a diesel at idle.
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Old 01-10-2010, 07:32 PM
NoD NoD is offline
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u can use a screwdriver, or a stethoscope to pinpoint the sound.

could be the new dizzy, so maybe u can fix the old one and fit it.

also it can be that the upper/lower part of the dizze are loose. dont know if mazda used two part dizzys, but i once kicked a volvo dizzy sligthly apart, and there was some sound and movement from it.
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1987 Mazda 929 LX HC 2.2i Vogue Silver
1987 Mazda 929 LX HC 2.2i Noble White
1987 Mazda 929 LX HC 2.2 Vogue Silver
x1988 Mazda 929 GLX HC 2.2i Vogue Silver (sacrificed)
1985 Nissan Patrol MK 2.8 Silver
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