Engine Lacks power and RPM, Help me guys.
 

----, for the last 3 days I've been ------- with the timing because I thought that is where my problem lies, but I guess its not, my build D16Z6, Vitara pistons wont rev to 7k like its intended to, now i'm assuming its because of the low CR of 8.5:1, but some people say no its not, some people say i'm blowing out my spark, I have no idea what the hell is going on, I cant rev past 5500 RPM when i'm driving. what do you guys think my problem is. i've checked everything, ECU, Cam Timing, Injectors, I got a brand new set of NGK plugs gapped correctly, and still not going past 5500 RPM.

This is pissing me off. my one buddy who knows his ----(smart guy) told me that maybe since the car is still NA it will do that because its not making enough power without the turbo to rev higher, So please help me out guys, i'm gonna give up on this soon.

Re: Engine Lacks power and RPM, Help me guys.
 

usually when this happens you have a blown rotor, but triangles dont go into round holes. lol.

Re: Engine Lacks power and RPM, Help me guys.
 

no problems get better with boost, if it wont rev past 5500, 8 psi is not going to help, low comp or not.

Re: Engine Lacks power and RPM, Help me guys.
 

sure you torqued everything down right when you were changing your bearings out? give everything a once over to make sure all the sensors and ---- are pluged in right or didint get knocked around. always good to check the stupid ---- before you assume its somthing big

Re: Engine Lacks power and RPM, Help me guys.
 

check your timing belt... make sure youre not a tooth or 2 off first ;)

Re: Engine Lacks power and RPM, Help me guys.
 

my friends car did about the same thing before the motor blew, we still haven't torn it apart so I don't really know what happened yet

Re: Engine Lacks power and RPM, Help me guys.
 

^^^^^^^^^ werd

You said something about not reving past 5500 while driving, will the engine rev farther with no load on it(in nuetral)??????

Re: Engine Lacks power and RPM, Help me guys.
 

Definitely make sure your timing is correct. My vitaras rev like crazy.

Re: Engine Lacks power and RPM, Help me guys.
 

What does it do at 5500? Does the power back off? Does it feel like it hits a wall?

Re: Engine Lacks power and RPM, Help me guys.
 

Lacks power at 5500, everyting till 5500 is fine, I dont know what the hell is going on, everyting was torqued down correctly, everytyhing was assembled correctly, so I dunno, i'll ---- some more with it tomorrow, hopefully that solves my problems, as for timing, I messed with timing for the last few days, retarting it and advancing it and nothing works.

Re: Engine Lacks power and RPM, Help me guys.
 

did you check the ECU or may be you can try another ECU?
also does the engine sounds like it is still reving up or does it sound like you hit a rev limiter??
does the needle bounce back if you floor it?

Re: Engine Lacks power and RPM, Help me guys.
 

try disconecting the vtec soliniod, since thats about when it kicks in see if it makes a differance :-\

Re: Engine Lacks power and RPM, Help me guys.
 

Vtec solenoid is not connected since I dont have a Vtec ECU, but that shouldnt make a difference, The needle on the tach jumps around a bit sometimes, but not all the time.

Re: Engine Lacks power and RPM, Help me guys.
 

can you borrow a dizzy from someone? See if the spark is cutting out. Does it run fine till 5500? Is the ecu chipped, what ecu is it?

Re: Engine Lacks power and RPM, Help me guys.
 

did you just use the disty to do that, maybe its off a tooth, mine did something like that before cept mine only went to like 4k and ran like ----, so i pretty much knew i was off a tooth...

might want to try a vtec ecu, maybe the fuel is cutting

hmm.. i doubt this would do it but maybe check the fuel filter

Re: Engine Lacks power and RPM, Help me guys.
 

No, I adjusted the timing with the cam and belt, kept ------- with it, still same results. I'm going to borrow my buddies ECU and Distributor and see if that solves my problem.

Re: Engine Lacks power and RPM, Help me guys.
 

hmm... just an idea but what happens when you start to lose fuel pressure?

Re: Engine Lacks power and RPM, Help me guys.
 

if ur vtec aint connected its gonna take longer than usual to reach redline from 5500 and up

Re: Engine Lacks power and RPM, Help me guys.
 

Yeah thats kind of what happened, anyway, good news guy, my buddy came over in his car, he has the same motor, we took his distributor and put it on my car, reved up to 6800, hits fuel cut off off load, still no vtec and no Z6 ecu, so I solved my problem.

Re: Engine Lacks power and RPM, Help me guys.
 

gap your plugs down to like .028

if its mising you could very well be blowing out spark.

or your motor is a steming pile of ill running ----

Re: Engine Lacks power and RPM, Help me guys.
 

haha, not the motor for sure, I mean compression is amazing, the plugs are gapped according to what the manual says but i'll try .028 and see what happens, thanks for the tip O0

Re: Engine Lacks power and RPM, Help me guys.
 

if hes blowing out spark with factor gap and 8.0 to 1 comp with no boost, that coil isn't putting out ----. :-\