Team Integra Forums banner

1 - 9 of 9 Posts

·
Registered
Joined
·
9 Posts
Discussion Starter #1
So I did a tune up on my 94 integra b18b. Valve adjustment, plugs and wires, fuel filter, cap and rotor. Now I have a rough idle and seems to be misfiring. Any ideas???
 

·
Registered
Joined
·
9 Posts
Discussion Starter #2
So I’ve ran through everything normal with idle misfires and came up with nothing. I checked manifold vacuum and I got 12in of vacuum. What is the normal vacuum at idle?? Is it like most engine 18-22??
 

·
Registered
Joined
·
95 Posts
Wrong firing order? Check that #1 compression TDC matches the rotor position for #1 and that the wires are correct.

If you made the valves too tight it will not build compression, ie valves remain open a bit. Compression check to verify compression is ok.


Chay
 

·
Registered
Joined
·
1,464 Posts
Also, make sure your wires are seated properly on both ends. I know I have had mine pop off or not seat correctly, before.
 

·
Registered
Joined
·
9 Posts
Discussion Starter #6
I’ve checked firing order and it’s all correct. Check timing, and it’s dead on. Check manifold vacuum and was at 12 at idle. Which seems low. I haven’t check compression yet. I’m gonna go over the valves this weekend. Just so weird how it’s pulls hard, can get to 6k every gear without skipping a beat. Just at idle it’s isles low and feels like a misfire. No cel light or stored codes.
 

·
Registered
Joined
·
89 Posts
It is possible that you have a leaking head gasket. Is there a difference when the engine is warm vs cold? Is there a difference at idle vs driving speeds?
You can test the head gasket by topping off the radiator [to the brim] with water and then removing all but one of the spark plugs (I like to go left to right; leaving the far left plug in). Leave the rad cap off. Pull the fuses for the fuel pump and the distributor (it maybe something else as I’m tired as I write this) before you start. If the water from the radiator fountains up for any of the cylinders tested, you’ve got a bad head gasket. Note, the water pump will move water out of the rad, but not much.
 

·
Registered
Joined
·
13 Posts
A bit late to the discussion. What plugs did you use? Use factory only...always. For valve adjustments I pick a feeler gauge in the middle of the spec range and make it snug but not really tight.
 
1 - 9 of 9 Posts
Top