I replaced the timing chains and tensioners and put everything back together but now i am getting slow cranking and no start? i have checked all my wires and ndont see anything out of the ordinary.
2005 Ford F-150

I replaced the timing chains and tensioners and put everything back together but now i am getting slow cranking and no start? i have checked all my wires and ndont see anything out of the ordinary.

(2005 Ford F-150)
i have the 5.4 3v and had a tensior blow a seal causing my bank 1 chain to go slack. i pulled it all apart and replaced tensiors, arms and chains. put back together and now when i go to crank its slow. almost like it is bogged down. have checked my wiring and can find any damage. my timing marks were dead on. the only thing i can think of my maybe starter went out. but it was cranking before with no issues?
Tags: ford, f 150
2 answers & 5 comments
Popular Answer
on September 23, 2019

First of all the aftermarket parts are not reliable at all - in fact some fail upon rotating the engine!

Normally this repair would include a complete timing kit using Ford parts.

Without actually being able to put hands on the vehicle all we can do here is offer a best guess.

Now this is a long shot but just in case I’d remove the serpentine drive belt then try cranking engine over.. A locked or binding belt driven component can cause the posted symptoms..

Good luck!

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on September 23, 2019

IF removing drive belt doesn’t help - it’s time to go back inside the engine for inspection.

Now - any *external failure* that has mysteriously occurred immediately following engine timing component installation would be the least likely suspect here.

However removing the drive belt is rather simple..

Hope it is indeed something simple!
on September 23, 2019
I thought the same thing. Took belt back off and still slow cranking
on September 23, 2019
Took the battery to autozone to have it tested and found a I had a dead cell. Bought a new battery and still the same issue
on September 23, 2019

Hard to say what has occurred - keep in mind when the chain tensioners loose oil pressure it is also starving the rest of the engine of oil... Just saying.

Seems kinda strange this only occurred ‘after’ you did the timing parts install.

Only addition thing I can offer is Good luck again!
General Diagnosis
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on September 23, 2019

First of all the aftermarket parts are not reliable at all - in fact some fail upon rotating the engine!

Normally this repair would include a complete timing kit using Ford parts.

Without actually being able to put hands on the vehicle all we can do here is offer a best guess.

Now this is a long shot but just in case I’d remove the serpentine drive belt then try cranking engine over.. A locked or binding belt driven component can cause the posted symptoms..

Good luck!

Sign in to reply
on September 23, 2019

IF removing drive belt doesn’t help - it’s time to go back inside the engine for inspection.

Now - any *external failure* that has mysteriously occurred immediately following engine timing component installation would be the least likely suspect here.

However removing the drive belt is rather simple..

Hope it is indeed something simple!
on September 23, 2019
I thought the same thing. Took belt back off and still slow cranking
on September 23, 2019
Took the battery to autozone to have it tested and found a I had a dead cell. Bought a new battery and still the same issue
on September 23, 2019

Hard to say what has occurred - keep in mind when the chain tensioners loose oil pressure it is also starving the rest of the engine of oil... Just saying.

Seems kinda strange this only occurred ‘after’ you did the timing parts install.

Only addition thing I can offer is Good luck again!
on September 22, 2019
Hello, are you certain that there was no timing related damage due to the chain issue? What happened that led you to find the bank 1 chain issue in the first place? You may have already sustained irreversible damage.
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on September 23, 2019
Started running real sluggish and then received a timing gear error. I pulled the seal off of the vct and found that the chain was super loose. Did some researching and found that the stock tensioners blow thier seals and causes chain to go slack. Went ahead and changed chains, arms and tensioner for both sides. My timing marks all lined up.

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