new motor running but only 2 cylinders

[FazdaBoy4ever]

ok so im in a tough spot.

i got my motor in and started up thanks to sonicdelema. but im only running on 2 cylinders. i have...

-run stock injectors
-run stock ecu
-got compression of 150 in all cylinders
-tested spark and i am getting spark in the 2 cylinders

now my problem is its the 2-3 cylinders not firing. which as sonicdelema explained to me the ecus being batch fire 1-3 4-2 it didnt make sense to him that 2 cylinders not firing, getting compression, were not even in the same batch.

im going to try to pull codes... but first its time to put some food in my stomach.

[BuGS]

Have you tried a new rotor and cap?

[neuspeedescort]

is this a bp or a bpt block? 150 is low on the compression side of a bpt and very low for a bp. my bpt when i compression tested is was 160/165 across the board. i know a couple people have tested their bp's are close to 200 but most are 185ish. this wouldn't explain the 2 cylinders issue but just a heads up.

NEUMAN

[FazdaBoy4ever]

a cylinder should be able to fire on like 70 psi (maybe it was 90) but 150 is MORE than enough for it to run.

2 days ago i tested at 165-170 across the board im not sure whats up... and i thought 150 was really good for a gtx?

[MD323]

is it still 150's after fixing the timing?

[neuspeedescort]

timing would have nothing to do with a compression test?!?!?!

yes it may fire on 90psi but its well below the tolerance window. your car would sound like a vw bug.

NEUMAN

[MD323]

timing would have nothing to do with a compression test?!?!?!

yes it may fire on 90psi but its well below the tolerance window. your car would sound like a vw bug.

NEUMAN

if the initial timing( as in crank to cam timing) is off yes it will becuase the intake or exhaust valve maybe open during the compression stroke, resulting in low #'s

[escortkid]

ya timeing affects compression a whole bunch. ive seen 11:1 small blocks that the numbers were only in the low 100's because of the heavy cam and timeing on the other side of things ive seen 9:1 small blocks with over 200 becuase of the way they are timed.

[BuGS]

I am still saying it is a cap or rotor issue if two are not firing out of different batches.

[neuspeedescort]

if the initial timing( as in crank to cam timing) is off yes it will becuase the intake or exhaust valve maybe open during the compression stroke, resulting in low #'s

ok you win i totally spaced on that timing adjustment. LOL i was thinking igntion for somereason and i know you disconnect the coil to compression test.

NEUMAN

[MD323]

ok you win i totally spaced on that timing adjustment. LOL i was thinking igntion for somereason and i know you disconnect the coil to compression test.

NEUMAN

its all good dude, I probably should have been clearer . Him and I had been back and forth via aim trying to figure out whats goin on.

I am still saying it is a cap or rotor issue if two are not firing out of different batches.

from what I understand he has tried 2 differrent disty's all to gether, and he says he is getting spark to those cylinders, so IDK

[Shades]

I'd replace the spark plugs, wires, distributor and cap... sounds like it's not getting any spark.

[Etienne]

ok, this may sound really dumb... but the simple things are worth a shot sometimes...

have you double checked the firing order? mabe those two wires are reversed on your cap... and no matter that you replaced the wires.. you may have put them back the exact same way they were before.. lol..

since in your first post you say you're getting spark in those cylinders... but they're just not firing.. maybe the spark is at the wrong time cuz wires are reversed... makes sense to me...

[MD323]

ok, this may sound really dumb... but the simple things are worth a shot sometimes...

have you double checked the firing order? mabe those two wires are reversed on your cap... and no matter that you replaced the wires.. you may have put them back the exact same way they were before.. lol..

since in your first post you say you're getting spark in those cylinders... but they're just not firing.. maybe the spark is at the wrong time cuz wires are reversed... makes sense to me...

holly sh1t, i didn't even think to ask him if he checked the firing order thanks!

[FazdaBoy4ever]

this was a test guys... ive been driving the car since 830 pm last night yeah i had the middle two wires reversed and no its not a test it kept me from driving my car for like 3hrs before it finally clicked wtf was wrong... i remembered running the wires looking at them and they didnt look right i know the way i run my wires the 1and 3 cylinder plug wires cross and the 2 and 4 cylinder plug wires cross and i only had one cross... it didnt hit me untill like 7 last night and i ran out and problem solved. that is how out of it i get when stupid stuff frusterates me.

during this process i bolted the tranny up, only to have to take it apart again because i didnt put the throw out bearing in along with the clutch fork.... i bolted my manifolds up only to remove the exhaust manifold 2 more times, one to port the wastegate on the turbo and 1 to install the little retainer clip that holds the wastegate arm to the flap. i did the mechanical timing 3 times (2 of which i was using the wrong timing marks (which was another one of my issues)... and i love moving forward on a project... i had the motor out in like 2.5 hrs, it went totally smoothly, everything worked like clockwork but i had to go backwards so many times i just stop thinking right after a while.

oh well its going again... now i just have a serious cooling problem, im going to start another thread (maybe i should go and make sure there is fluid in it before i make that post with how stupid this was )