1998 ford mustang

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  #1  
Old 05-10-08, 02:30 AM
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1998 ford mustang

i got a problem rhis car has a 4.6L standard i was driving it when i noticed it rattling when i shifted into gears when i letoff accelerater it made this sound thought maybe the pushrods were loose i slowed down to make a turn at about 5 mph and the motor lockedup tires slidto a stop engine wood not turn ober no oil leakage but lockedup i soppose could it be anything else or is it time to find another block are could the pusherods have dropped and bound the motor thank you in advance for the help
 
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Old 05-10-08, 07:08 AM
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sounds like a new motor is in order, if the motor is locked like you think. when you tried to crank it did the starter just go click and buzz? if so don't try to crank or you will overheat the starter and ruin it.
is there any oil in the engine? how many miles on this car?it looks like it is an interferance engine so if you broke a cam belt you bent the valves which would lock it up. sorry I am not 100percent sure on this engine.
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Old 05-10-08, 07:53 AM
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If the motor is seized, which sounds like it is, overheating the starter is the least of his/her worries.
 
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Old 05-10-08, 07:07 PM
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nor does it have pushrods...or a timing belt. it uses chains...

have someone verify that it is indeed locked up...then go from there with your options.
 
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Old 05-10-08, 07:21 PM
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So, putting a couple posts together from others: Could it be most likely the rattling was loose chain jumping teeth and then bent valves due to interference engine?
 
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Old 05-10-08, 08:00 PM
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haveing never been inside one of these i just assumed from the little i read about it that it used a belt. Still sounds like a locked motor.
remember murphy was an optimist
 
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Old 05-10-08, 08:02 PM
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most seized engines have bottom end failures rather than top end. perhaps the oil pump or pump drive failed followed by the lash compensators rattling then the crank seizing in a bearing(s)
 
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Old 05-11-08, 06:54 AM
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Threw a rod maybe; he didn't describe how loud the noise was.
 
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Old 05-11-08, 09:05 AM
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John, I believe the 4.6L's are a modular motor, with no pushrods.
 
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Old 05-11-08, 12:40 PM
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"throwing a rod" refers to a connecting rod...not a pushrod
 
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Old 05-11-08, 01:31 PM
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25 years ago, my dad, who never had a good habit of checking engine fluids or parts, ran out of oil in his Mazda and it picked on the top half of his engine, in his case, and not enough oil made it up to the overhead cam bearings and the cam welded itself to the bearings, or another terminology - he 'spun the bearings'. I rebuilt it out in the driveway, and it lasted many more thousands of miles, and thereafter he checked his fluids on a more regular basis.
 
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Old 05-12-08, 04:21 AM
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Sorry, I should have been clearer in a post that was previously talking about pushrods.
 
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