my engine is getting absolutely no compression, it turns over fine, but it just spins freely as if there were no spark plugs in there, but they are in their. what should i look for to see why im getting no compression, the timing belt is on there and not broken, and is turning the cam in sequence with the crank, and the distributor is turning also, so it cant be a broken cam.

 

Could be quite a few things... Check your plugs; check your fuel pump and fuel pressure; check ignition coil; check injectors; need more info about car, motor, ecu... was it working before, or is this a motor you just built?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by endospeed &raquo;</TD></TR><TR><TD CLASS="quote">Could be quite a few things... Check your plugs; check your fuel pump and fuel pressure; check ignition coil; check injectors; need more info about car, motor, ecu... was it working before, or is this a motor you just built?</TD></TR></TABLE>he saying no compression...dont mislead him! was car running fine before??? and did you change head gasket or anything...if it turns that easy I dont know what to say....could be head gasket,rings, valves.....list goes on :-)

 

have you compression tested to see if that is the problem?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by yz125rider21 &raquo;</TD></TR><TR><TD CLASS="quote">he saying no compression...dont mislead him! was car running fine before??? and did you change head gasket or anything...if it turns that easy I dont know what to say....could be head gasket,rings, valves.....list goes on :-)</TD></TR></TABLE>
He hasn't stated that he has tested compression, so it's possible that it's not a compression problem. If it is spinning freely it is possible that it is not getting any fuel or spark. I would find it hard to believe that NO cylinders would fire. There would be some crank-up unless the motor were blown, and this probably isn't the case here.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by QuickStyle &raquo;</TD></TR><TR><TD CLASS="quote">my engine is getting absolutely no compression, it turns over fine, but it just spins freely as if there were no spark plugs in there, but they are in their. what should i look for to see why im getting no compression, the timing belt is on there and not broken, and is turning the cam in sequence with the crank, and the distributor is turning also, so it cant be a broken cam.</TD></TR></TABLE>

OMG dude i am haveing the same damn problem

watch this video see if its the same it sounds the same i also can figure out WTF is going on

http://s82.photobucket.com/alb...2.flv

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Under Con. CrX &raquo;</TD></TR><TR><TD CLASS="quote">

OMG dude i am haveing the same damn problem

watch this video see if its the same it sounds the same i also can figure out WTF is going on

http://s82.photobucket.com/alb...2.flv</TD></TR></TABLE>lol....thats not even turning the crank from the sounds of it...sounds like the starting just sitting there winding to sleep.

 

http://s82.photobucket.com/alb...3.flv

trust me its turnig the crank like i said before we are both havenig the same problem (look at this video for prof)

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by endospeed &raquo;</TD></TR><TR><TD CLASS="quote">He hasn't stated that he has tested compression, so it's possible that it's not a compression problem. If it is spinning freely it is possible that it is not getting any fuel or spark. I would find it hard to believe that NO cylinders would fire. There would be some crank-up unless the motor were blown, and this probably isn't the case here.</TD></TR></TABLE>

so what do you think mine could be i have fule if you sit there and try to start it for a while you can start to smell fule and theres spark i checked

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Under Con. CrX &raquo;</TD></TR><TR><TD CLASS="quote">

so what do you think mine could be i have fule if you sit there and try to start it for a while you can start to smell fule and theres spark i checked </TD></TR></TABLE>btw its FUEL :-)....take a spark plug wire off and put it next to a piece of metal on car to make sure its sparking...then check fuel pressure...also MOST the time its just timing(spark plugs wires not in right order)....did you put new timing belt on????just curious cause there is 2 TDC :-)

 

i know i just stated that i checked spark and theres fule no i didnt change the belt and i know theres 2TDC so please nomore on fuel or spark

 

If you have good rings and the valves are seated correctly then compression testing should pass just fine. There are a few types of compression tests. If the head gasket is blown it will still crank but the blowby will pressurize the coolant and it will blow coolant everywhere, and also leak into the head where the cam is (noticable chocolate milk substance from coolant mixing with oil when you remove the valve cover). If it is just the rings, I doubt ALL the rings are bad and it would still crank and probably smoke a lot. If you blew all of these things, I feel sorry for you.

If none of the above apply, you are dealing with a fuel/air/spark problem. There are quite a few things involved here. I would check simple things first like plugs. You can check your plugs and distributor at the same time by removing a plug and leaving it connected to the wire (while not in the motor) and trying to fire the engine. If it is sparking, you know it's probably a fuel problem.

If it is a fuel problem, it could be the ECU, wiring harness, fuel pump, fuel pressure (regulator, line, rail, etc). Find your problem systematically.

If you know that there is fuel and spark, it could be a compression problem. Like I said, check for compression. You can lose compression in a lot of different ways; even holes in pistons, cylinders, valves, etc... That is rather strange I have never seen a motor do that. Like I said, I doubt you have compression problems, but before you go any farther, compression test. Even STILL, it is still possible that it is getting an incorrect amount of fuel or sparking at the incorrect time.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Under Con. CrX &raquo;</TD></TR><TR><TD CLASS="quote">i know i just stated that i checked spark and theres fule no i didnt change the belt and i know theres 2TDC so please nomore on fuel or spark </TD></TR></TABLE>ok mate if you have fuel and spark and checked everything it would attempt to start...its not EVEN wanting to start.check your plugs then mate sheesh....or switch out the dizzy if your timing is perfect....

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Under Con. CrX &raquo;</TD></TR><TR><TD CLASS="quote">

so what do you think mine could be i have fule if you sit there and try to start it for a while you can start to smell fule and theres spark i checked </TD></TR></TABLE>

If you can smell the fuel just from trying to start it, where is this smell coming from?

 

well i know the rings are bad but there not blown cus i took this out of a car that ran and ran strong but it did smoke some

so now that leads to spark-fuel right how do you check fuel pressure??
would it be form a dizzy timeing?? cus it has a new dizzy and wires but not the plugs.

how would you pressureiz your lines cus oviusly when i took the other motor out with many it lost pressure??

i have tried 2 ecu's(motor is a D15b1)(civic STD) i have the ECU and if its in the harness would it be like a bad ground

before the swap the car started and ran *sorta* and i didnt touch nothing of the wire's inside other than when i swiched ECU

so what would you recommend to do first can i use the old igniton coil from the old dizzy to see if that would help

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by endospeed &raquo;</TD></TR><TR><TD CLASS="quote">If you can smell the fuel just from trying to start it, where is this smell coming from?</TD></TR></TABLE>

**** i never looked in to that i will have to check tommorow when i get back form work and i will let you know

where should it not smell like its coming from cus as you can see i have no intake on right now and i think the smell is coming from there so IDK

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Under Con. CrX &raquo;</TD></TR><TR><TD CLASS="quote">
so now that leads to spark-fuel right how do you check fuel pressure??
</TD></TR></TABLE>
Install a fuel pressure gauge

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Under Con. CrX &raquo;</TD></TR><TR><TD CLASS="quote">
so what would you recommend to do first can i use the old igniton coil from the old dizzy to see if that would help</TD></TR></TABLE>
If you have checked the plugs and they are firing your ignition coil is okay and
your distributor should be okay.

About the ECU.. is this a dual-point or multi-point injection system? If it's dual try a PM5... check the ECU code. If it's multi point use a PM6.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by endospeed &raquo;</TD></TR><TR><TD CLASS="quote">Install a fuel pressure gauge


If you have checked the plugs and they are firing your ignition coil is okay and
your distributor should be okay.

About the ECU.. is this a dual-point or multi-point injection system? If it's dual try a PM5... check the ECU code. If it's multi point use a PM6.</TD></TR></TABLE>

theres no other way of checking??

no its a dual i have 2 pm5 i have the DX and the STD

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Under Con. CrX &raquo;</TD></TR><TR><TD CLASS="quote">
where should it not smell like its coming from cus as you can see i have no intake on right now and i think the smell is coming from there so IDK</TD></TR></TABLE>
I was just thinking, if it's all being atomized and there is a really strong fuel smell, the fuel is probably not going into the cylinders at all, that would be just wierd and probably indicate your valves are out of whack? My head hurts from thinkin about all this. I'm better with my hands not my brain. *duhhhh mama says life is like a box of chocolates*

 

lol yeah most the tech guys are like that lol
i did change the injectors could it be that there not siting write??

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by endospeed &raquo;</TD></TR><TR><TD CLASS="quote">I was just thinking, if it's all being atomized and there is a really strong fuel smell, the fuel is probably not going into the cylinders at all, that would be just wierd and probably indicate your valves are out of whack? My head hurts from thinkin about all this. I'm better with my hands not my brain. *duhhhh mama says life is like a box of chocolates*</TD></TR></TABLE>

out of wack as in bent to **** or as the cam not turning them porperly

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Under Con. CrX &raquo;</TD></TR><TR><TD CLASS="quote">
out of wack as in bent to **** or as the cam not turning them porperly</TD></TR></TABLE>
yeah not opening the intake valves, pooling up there maybe flooding the cylinders, but that is a stretch there would probably be some kind of popping going on...

my last resort would be to open the intake lid and exposing the top of the bowl where the screen is and pour a LITTLE gas down into it and try to fire it. I hate carburetors. I don't deal with them at all. If I were you I'd just swap that head to a multi-point head and ECU, intake; just grab you a harness from a multi-point car. All that stuff is relatively cheap. I have a MPFI head and Pm6 ECU for sale if you need it real cheap let me know. Try to get it started first before you make any rash decisions. Dual point is worthless IMO so it's worth the upgrade for just a little pocket change. I just had to do it to a CRX a few days ago because I wasn't messing with the carburetor to save my life.

 

uhhh ok so
1.check fule pressure
2.try to manualy feed the gas to the motor
am i missing any thing??

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Under Con. CrX &raquo;</TD></TR><TR><TD CLASS="quote">uhhh ok so
1.check fule pressure
2.try to manualy feed the gas to the motor
am i missing any thing??</TD></TR></TABLE>

*sigh* it's hard to tell, man... hard to tell...
Check everything... compression test... you are dual point so fuel pressure is probably out you're dealin with the carburetor... I hate carburetors... make sure you got the right ECU... check all wiring... make sure your valves are opening... make sure your plugs are firing... if it were me I'd probably end up getting pissed off and overhauling the entire motor

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by endospeed &raquo;</TD></TR><TR><TD CLASS="quote">*sigh* it's hard to tell, man... hard to tell...
Check everything... compression test... you are dual point so fuel pressure is probably out you're dealin with the carburetor... I hate carburetors... make sure you got the right ECU... check all wiring... make sure your valves are opening... make sure your plugs are firing... if it were me I'd probably end up getting pissed off and overhauling the entire motor</TD></TR></TABLE>
LOL **** i want to what sucks is i baught the car in payments and i was going to fix it but about 3 days later i got laid off form work so i have 0 dollars and i still have to pay the car off if i had a job i would just wait and do a ZC or some thing but i dont so i have to get it runing so i can get a job lol IDK what i am going to do
but Thanks for all your Help