RRC looses power , Need help please

[adventurer]

Hello all, my 3.9 i RRC looses power when trying to take off on high range 1st gear and even on 3rd gear low range it dose not rev on a tiny hilly area and also on small area of sand it dose the same , but on paved road its very fast car and faster than any other 3.9 RRC, need help to know whats wrong

 

[joey]

How many miles.... last tune up and what was done?

 

[adventurer]

How many miles.... last tune up and what was done?

i rebuild the engine , changed all parts except pistons and crank , and changed the 3.9 camshaft with 4.2 camshaft , new coil and 8mm spark plug wires , new clutch and all its tools and new low range chain , i did all this because it was loosing power but still the same problem ..... its done 2000km since the engine was rebuild

 

[joey]

Sounds like possibly a fuel issue, but could be the distributor.

 

[adventurer]

Sounds like possibly a fuel issue, but could be the distributor.

the fuel pump is working fine,what do you think is wrong with the distributor ??

 

[joey]

If it is an older distributor or still original factory, then it may be worn out... the do tend to get old like anything else.

 

[adventurer]

If it is an older distributor or still original factory, then it may be worn out... the do tend to get old like anything else.

do you know how can i test it ?

 

[joey]

Not sure there is a test.

http://www.v8engines.com/engine-4.htm

http://www.v8engines.com/electrics-1.htm