WHAT DID I DO WRONG? 2000 5.4 Timing chain
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WHAT DID I DO WRONG? 2000 5.4 Timing chain
I recently replaced my timing chain on my 2000 5.4 with 170,000 miles . I followed the steps exactly how the manual said. I also replaced all spark plugs with motorcraft, I put everything back together, started the engine, but its not running right. The engine shakes at idle no service engine light and when I accelerate the engine almost sound like a diesel with no power.
Do you guys think I put the timing chain wrong? or could it be a COP
Do you guys think I put the timing chain wrong? or could it be a COP
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Joined: Sep 2006
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From: Phoenix, AZ
Well....I don't think I'l lbe any help....
But will offer an opinion. Sound like you did the timing chain right since my guess is you would experience more noticible problems if it was wrong - popping, backfiring, severe sputter, etc. - or worse, valve / piston catastrophe. If it just shakes a little at idle then I bet a COP is the problem. I changed my plugs at 35k (2006 Navi) and didn't replace the COPS but if you're at high mileage lots of folks here recommend the $80 eBay set.
When you drive it does it accelerate OK? Good luck. I commend you for even trying the timing set. Well done!!
When you drive it does it accelerate OK? Good luck. I commend you for even trying the timing set. Well done!!
Fleet Owner
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With the engine running, unplug the 2-wire connector for the COPs one at a time. You should notice a change in how the engine runs. If you find that disconnecting a COP doesn't cause any change in the engine, you've found the problematic cylinder. If you've found no problems during the COP test, then it's possible you're off a tooth with one of your timing gears.
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I messed around with a 4.6 windsor that had a bad tick and found it difficult to get the chains back perfectly. There are specialty tools available to hold the chain sprokets in place while you install the chains. These tools differ for windsor and romeo engines. If I ever go in there I would say these tools are a must .
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With the engine running, unplug the 2-wire connector for the COPs one at a time. You should notice a change in how the engine runs. If you find that disconnecting a COP doesn't cause any change in the engine, you've found the problematic cylinder. If you've found no problems during the COP test, then it's possible you're off a tooth with one of your timing gears.
Is there any shop I can just take the truck and have them connect a computer to the OBDII to tell me exactly what is wrong with the expy?
If so what is this computer called?
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Fleet Owner
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Yes, that is what I meant...one at a time.
If your check engine light is not on, there is no code for a scanner to read. Your options are to figure it out yourself, or take it to the dealer where they have the higher level diagnostic equipment.
If your check engine light is not on, there is no code for a scanner to read. Your options are to figure it out yourself, or take it to the dealer where they have the higher level diagnostic equipment.
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would you still think it would be OK to drive the truck till I get some new COP's from eBay?
If this doesn't work I guess I will have to take the timing cover off and look.
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If the skip is minor and you limit your trips to easy going short necessary ones, then I'd say yes you can drive it. The risk is if too much unburnt fuel gets into the catalytic converters, their lifespan becomes significantly reduced.
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Hmm, tough call without being there and seeing it for myself.
If the skip is minor and you limit your trips to easy going short necessary ones, then I'd say yes you can drive it. The risk is if too much unburnt fuel gets into the catalytic converters, their lifespan becomes significantly reduced.
If the skip is minor and you limit your trips to easy going short necessary ones, then I'd say yes you can drive it. The risk is if too much unburnt fuel gets into the catalytic converters, their lifespan becomes significantly reduced.
hopefully its not the timing.
thank you for all your help.
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From: hazleton pa
if it is the timing.. on the romeo motor (direct from alldata) timing was a breeeze u take ure chain make it completely flatin a straight line and paint the links on either end then u put one link to the dot on the cam and one on the line on crank... i have it online on youtube just search truckeradg86 it will show you proper timing
if u like