rpm/load specific tap?

[next_level]

soon as i start the car i get a slight tap (sounds like lifter or exhaust)
under a little bit of load and up until about 2800rpm i get the tap, once im up to speed and just barely touching the gas to keep the car moving i get nothing, if i stomp on it i get nothing, i put the car in nuetral and rev it i get nothing...
was thinking it was an exhaust leak but i cant figure out why it would only be under load, unless the motor is twisting just enough to open the leak up more....
i dunno...

cam/crank sensor was supposed to be done in the past 2 years, could it still be going bad?(cant prove it)
motor should have around 40000 on rebuild (cant prove it)

 

[next_level]

hmm.....well it's got me confused and all of you too?

 

[gold69charger]

Can't help you with your car problem.....But good to see your still alive! I have been waiting for you to get back to me on the tires and rims! Are you going to call me back sometime soon?

 

[BlackBandit]

Exhaust leak before the turbo (manifolds) would get louder with more load. Could be mains. My car wiped the mains and I would get a slight knock when the engine was "in between" acceleration and deceleration. In other words no load.

 

[next_level]

Originally posted by gold69charger
Can't help you with your car problem.....But good to see your still alive! I have been waiting for you to get back to me on the tires and rims! Are you going to call me back sometime soon?

sorry man...i havent had a phone i ran it over....but the rims sold
sorry

 

[next_level]

Originally posted by BlackBandit
Exhaust leak before the turbo (manifolds) would get louder with more load. Could be mains. My car wiped the mains and I would get a slight knock when the engine was "in between" acceleration and deceleration. In other words no load.

motor is supposed to have around 40-60k on the rebuild....the previous owner had the headers welded up...i dont hear it very much in nuetral/park when i rev the motor i hear it slightly for a split second....

could the lifter(s) be getting weak and bleeding down at low rpm but pumping back up when i get the rpms up..but i dont think that would change based on load...

i really dont wanna believe it's an internal engine problem because of all the stuff the dude i bought it from told me...but then again....i cant prove none of the stuff