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Old November 12th, 2017, 15:12
asymptonic asymptonic is offline
NAXJA Member
 
Join Date: Jul 2012
Location: Austin, Texas
Posts: 136
Piston slap: how long?

Okay, so what I thought was lifter tick clearly isn't. MMO spraydown did nothing, and on a long drive today I'm noticing the slap doesn't quiet down after warmup any more, at least on one cylinder. Recent oil change w/ Rotella T6 5w40 and a new Wix 51515 filter didn't seem to help with startup clatter either, though I'm unsure whether it made the always-clattering cylinder start or get worse.

Question is: How long should I run like this? Should I be looking to get the engine rebuilt soon? 192k at this point.
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1998 4.0 I6, AX15, NP231
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