97 ex 4dr. just recently had honda emissions tune up which includes new plugs wires cap and rotor. egr ports are cleaned and new egr valve installed by honda recently. it has an aem cai but other than that its stock.

lately its been giving me trouble when i start it and sometimes wont start (starter?????). when it does it idles really wierd slow at first and then up and down.

MY Main Concern: i have noticed a decrease in power (i have to push harder on the gas to go a given speed than i did before)

any ideas???????on any part of my problems????

 

also my cel is on and im getting it diagnosed tonight

 

haha has it occurred to you that the two problems may be related?

check the cel first and see what it says

 

They might have adjusted your throttle cable. Are the RPMs the same at a given speed as they were before?

 

after i reach around 2500 rpms the accel picks up. the rpms and speed still match up its just slower at increasing.

 

okay the CEL was two codes:

P0304 Cylinder 4 Misfire Detected

P1399 Manufacturer Contrl Ignition System or Misfire

 

if im not giving the right info or not enough of it let me know....but i think something is seriously wrong with my car and id appreciate some advice...

 

Get it compression tested. I went through the same thing in my 200sx. And it turned out to be a blown head gasket.

-Eric

 

dammit. not what i wanted to hear. cani do that at any mechanic shop?

 

yeah it shouldn't take too long to replace, actually.

 

can i do it myself if i have some mechanical knowledge?
and how do i test if thats the problem

 

If you have a blown head gasket, its probally cause by the head warping. So, id get your head milled ($100) and your also gonna need new head studs. You should never re-use OEM head studs, i belive ARP head studs are reusable to e certain extent. Heres how to do a compression test...


http://www.motorage.com/motora...16170

GOOD LUCK!

-Eric

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by lax1089 &raquo;</TD></TR><TR><TD CLASS="quote">okay the CEL was two codes:

P0304 Cylinder 4 Misfire Detected

P1399 Manufacturer Contrl Ignition System or Misfire</TD></TR></TABLE>

according to my source P1399 means "glow plug circuit high side, high input"

i dont know what the hell that means though, lol sounds like something for diesels. glow plugs?