sohcturbo92vx

ok let me start off by saying i am a mechanic for a living and im am truly stumped. i have a built d16z6 top to bottom boosted and has methanol 2 cylinders will not fire went over all the trouble shootin pulled the rail checked for injector spray pulled the plugs checked for spark has spark has fuel but wont ignite. checked the valves they look fine to me... anybody else have an opinion? i figured injectors because when you pull the plugs on the two cylinders you smell no fuel.

goldsy

Compression good? Is it the same 2 cylinders not firing? Can you swap the injectors around and get those cylinders to fire?

B_Swapped93

x2 you skipped an important test, 2nd is this the "first start up" or did it just decide to crap out.

sohcturbo92vx

No change when injectors are swapped tried swapping the plugs no change compression is good.

sohcturbo92vx

First start up after replacing the bearings in the bottom end after slow motion motor sports spun them on the sumo doing a pull with break in oil in

B_Swapped93

what about swapping spark plugs ? as simple as it may sound inspect the cap n rotor look at the posts for the cyl's that are not firing.

sohcturbo92vx

Went all over the plugs put new plugs in same issue. Has good spark all the way across. No need to test posts. Any other ideas?

goldsy

Do you know what cylinders are not firing? You say 2 cylinders aren't firing. Is it always the same 2 cylinders not firing or is it a random 2 cylinder misfire? Does the engine run on 2 cylinders at all? You're getting fuel, you're getting spark, you have compression. I really don't know what else to turn to other than valves and or timing.

B_Swapped93

as said which cylinders are 'missing" post up a bit more info.

sohcturbo92vx

Cylinders 1 and 2 are dead no firing at all. It's not a miss. The tubes on the ram horn are cold till it runs for a min then they start to warm up but I believe that is just heat from the other 2 tubes because when you unplug the plugs in cylinder 1 and 2 it still runs the same.

TomCat39

Never saw you reply about compression numbers. Someone had asked and it seems to have gotten missed.

Fuel, spark.... That only leaves compression, maybe more than just bearings were spun?

I am assuming you used an HEI spark tester so as to rule out the ignition control module. Can't be coil being you get firing in two cylinders.

Last thing might be a bunk ECU but really not sure how that would play into it.

sohcturbo92vx

I just got my ecu back from hondata so that would be ruled out ill get the numbers tomorrow it's been real bad out here all day but no everything else was fine in the motor I checked everything when I replaced the bearings. After compression test was good I pulled the valve cover so I can c if the valves are just stuck or something but it started raining. Any other input would be great. Will update tomorrow after checking if valves are stuck with the exact numbers of the compression test

sohcturbo92vx

Just for ***** and giggles I pulled my distributor cap off and it had oil in it. It was causing cross spark. Getting new distributor update then.

B_Swapped93

that means you inner distributer o-ring is leaking. And hmm thought you said my idea of checking the cap/rotor was a waste of time.....?

sohcturbo92vx

No it isn't the inner o ring there's screws missing inside the distributor and everything had spark so I wouldn't have thought that it was miss sparking.

B_Swapped93

You have taken a distributer apart before right ? I did a "DIY" on how to replace the internal o-ring. Where else can oil get inside from ?

sohcturbo92vx

Yes and I understand what you are saying yes it is leaking no not because it is bad. There are 2 screws missing that hold the pressure on the o ring for it to seal properly. U see what I'm saying? And it looks like somebody tried taking it apart before because I was gonna take the wheel off and replace it but the screw is stripped so like I said I'm just gonna get a new one..

Jjbaehr

You check the 2 injectors for pulse with a noid light?

kcoen

Did you double check to make sure the mechanical timing was not off by a tooth or two? Car will still run with it off but not very well. Compression would be lowered however if off but still worth double checking the timing marks. Bought a car once with the same symptoms you are having and it was the mechanical timing. It is different from d16z6 to d15b7/8 so who ever did t-belt may have set it for the wrong engine.

sohcturbo92vx

Yes injector paulse was checked

sohcturbo92vx

I did all my timing and set it exactly to the marks. Like I said I pulled the distributor cap an there was oil in it getting a new one tomorrow from work and ill update when I get home