98 jeep wrangler blowing black smoke from exhaust.
Ive hydrolocked the jeep 3 times. pulled the plugs, turned it over, put plugs back, started right up. ever since the last time i did it it runs terribly. it idles way down at a stop then revs up all of a sudden then goes back down. it randomly sputters and looses power when im taking off from a stop and sometimes does it when im just driving. It seems to run better if i keep it in a lower gear at higher rpms. and it blows black smoke from the tail pipe every once and a while. Any ideas what the major problem is?
Secondly, how in God's name can you be stupid enough or unlucky enough to hydro-lock the engine 3 times?
Third, how could you think pulling the plugs and trying to crank it would help?
Lastly, it's his first post..
1998 Jeep Wrangler
4.0 : 5 Speed : Green with Black hard top : 33X12.50 Parnelli Jones Dirt Grip's on Eagle Alloy 15x7's : e-AutoGrille's Rock Crawler front bumper with an Engo E9000 with synthetic line
Its a 6cyl. Pulling the plugs and turning it over lets the water out, dry the plugs, put them back in, itll fire right up. i need a snorkle. and it also idles at like 1600rpm when i push in the clutch or have it in neutral. think it could be my o2 sensors? the check engine light goes off and on.
Although an engine that hydrolocks at idle may simply stop, catastrophic engine failure is likely if an engine hydrolocks while running at speed. The most common result of hydrolock at speed is that the piston rods are deformed; they bend and fold between the piston at their top, which cannot travel upward any farther, and the crankshaft at their base, which continues to travel upward. Absorbing the force of the sudden stop may crack the block, crack the crankcase, destroy the head and shatter the bearings.