ka24de underpower?

[ilovemy240sx]

hello everyone i have a 91240sx and my problem is i have no power!! its not running right..it sounds really loud but its not pulling, also i cant burn out. when i step on it from a start it bogs a bit then it grabs on, but still feels really slow! theres also a hiss coming out of the engine bay when im driving. please help!! im thinking its my fuel pump, or fuel injectors? but idk.

[Razi]

I would check for fuel leaks and vacuum leaks.

Check under the hood as the car is running for any leaks.

[ilovemy240sx]

ok will do, will compression have something to do with this, bc i did compression check and it was normal

[Gogach]

How to check vacuum leak?

[liquid_cool]

good way to do it..buy a can of starter fluid..and spray a tad..not alot at each vacume connection/hose..even rub some on the hose if ya can..do each hose seperate if ya can..listen to the motor..if it reves up high..you have found a leak.

[Wc240]

check your timing/advance and spark as well. Fuel pressure and vacuum signal to FPR