Ok,

92 Si, 95 b18b1 swap.

Recenting changed my timing belt, water pump, tensioner, and tensioner spring.

Before changing the timing belt it ran good without these symptoms.

Now it runs "ok", kind of lacking in the power though, seems just a little sluggish. When I start it up cold, it has a small small misfire, and then as it warms up the misfire goes away, until it is fully warm. Once fully warm the misfire comes back at idle. Its not a bad misfire, but noticable. It will misfire revving in neutral up to 3k rpm, but after that it seems to even out if you hold the throttle steady.

I am 90% sure that the timing belt is on correctly and the teeth are all correct. I set my timing with a timing gun and its at 16 degress BTDC. I figured that since the timing is right according to the timing light, that I can't be off by a tooth. Am I wrong to assume this?

What else could cause my engine to be lacking in power and misfire?

Keep in mind, I still am getting 33mpg on the freeway, and have driven about 300 miles with it like this. I can't figure out what is wrong.

Any ideas? I need to figure out what is causing the problem. I'm about to just bust out the money and do a full tune up in case it is something completely unrelated. Maybe a ground or something.

I need any and all opinions.

Thanks

 

still sounds like that timing is off to me. i would double check that and make sure its right.

 

your timing is definitely out.
even if you time it with a timing gun, it's still going to be out.
I'm putting money on the intake cam.

 

thats seems to be the general idea on all the forums that I've posted on. Gonna take the valve cover off in a bit and check her over again. thanks guys

 

so how did your date go? hopefully you fixed it and she wasn't all, what a hooptie.

 

haha date went very good

It was the intake cam, off one tooth, leaning too far towards the front of the car

 

BAM. good job.