hard to turn or crank engine

[fernando cunha]

I have 4 cylinder turbo found out engine compression
Is bad 1st cylinder 85 psi the rest 95.
Managed to find another engine only problem is cranking .
Battery is fully charged 12.80v
I also checked timing is perfect.
I removed plugs and has no inlet manifold..
Got gearbox on with starter motor to crank it.

Now engine is off the car and im using jumper leads to crank it.
Got earth wire black touching starter body.
Got red wire on starter pin .
Got screw driver touching 1st and secondary pin of starter
engine struggles to turn and leads gets hot and its just not possible
To check compression.
I was thinking maybe battey problem so I removed
battery from another car that I use daily and same thing.
Any help thanks

Topic

[fernando cunha]

also i can crank it by hand no problems

[Richard Kirshy]

If you can turn the motor by hand and have tried 2 different batteries.
It would appear the starter may have a issue.

[Dan]

Also check voltage drop in the cables. It the cable is taking too much voltage, it will make the starter spin slow, if at all.

[fernando cunha]

[quote=”dhimm1212″ post=162910]Also check voltage drop in the cables. It the cable is taking too much voltage, it will make the starter spin slow, if at all.[/quote]
thanks for reply.
Starter is only 2 weeks old.
By watching this video gave me a better understanding
https://www.youtube.com/watch?v=DfLyh43iihM.
I assumed that my jumper leads were good enough after all I used them to jump cars in past.
Will try find better wires

[Author]

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