1995 Gs300 With 2Jzge Engine Low Power?!

[zezooo]

hi,i have 1995 gs300 with 2jzge engine, i bought it b4 3 month i feel it is heavy and not accelerating smoothly, i cleaned thottle body and changed spark plugs, air filter, fuel filter and lubricants, and i used enjector cleaner. but still same.

NOTE: this model of engine have no MAF sensor.

what could be the reason or the solution?!

may be timing? is the distributor adjustable?, plz help,,,

[zezooo]

sorry i forgot to say that;

1- few days my water pump stared leaking coolant from water pump pipe.

2- i take my car to shop to check it to diagnose by computer then he said no errors.

But when i try to check codes manually by connecting TE1 and E1 , only cruise control light start flashing as if giving error code no 12, but i didnt know b4 that cruise control light have codes.

[zezooo]

no reply ?!!

originally not have MAF SENSOR AND EGR SYSTEM