So is my v8 supposed to crank by hand?

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mikeh501

Active Member
Posts
356
So, i recently bought a v8 engine and a chasis to start a ground up rebuild of my 90 (200tdi). The engine is a bran new RPI 4.6 which I got from an auction for what could be a steal (if its not fubar lol)

So, had the time today to have a good look at the engine. I wanted to make sure it would crank over OK.

1.) Removed each spark plug. Only 1 and 3 has any corrosion at all. A little white dust/ali type corrosion. A quick wire brush removed in seconds.
2.) Inspected each bore with a borescope and they are as clean as a whistle. Obvious this has never been started as you could eat your dinner off the insides. Lovely cross hatching etc.
3.) Bores 1,3 and 8 had minor amounts of what can best be described as condensation inside but no corrosion. Rest were clean and dry.
4.) Proceeded to use the air compressor blow gun to gently air out the cylinders. Dropped some penetrent wd40 type stuff and little engine oil into each bore. Had a brew.
5.) Tried to crank engine with shortish break bar. no plugs etc.

...and it wont turn clockwise, only counter clockwise? bit perplexed by that. This is obviously standing in front of the pulley and viscous fan.

It turns CCW OK but is pretty stiff but did a few revolutions of the crank pulley. Lots of squeking from the ancilleries.

I might pull the serpentine belt off it and try again. Could be a jammed ancillery? (a/c, alternator, power steering pump)

Im thinking there cant be much at all wrong with it as its literally as new. Some photos :)

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you may be lucky often 1 or 2 cylinder corrode were rings contact bore unless engines been prepared well, its worth checking journals as well,id definitely try with ancillary belt off
 
when i removed the rocket cover it had oil over all the metal parts, so im assuming the same is true of the bottom end.

what i dont understand is why it rotates CCW but not CW.
 
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