i have a 89 civic hatch with a turbo dohc zc in it, im just not finishing the turbo project and every time i try to hit boost i throw a map sensor code. I have the check valves on it, but they are on a 3 way tee. Does anyone know if they need to be spaced out some or any ideas on how to trick the map?

 

Are you sure you have them in the right way? Disconnect the line on the TB and blow into it.(boost) You should NOT be able to blow air into the line. Now try to suck air from the line.(vacuum) You should be able to suck air freely through then line.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by versatilezc &raquo;</TD></TR><TR><TD CLASS="quote">i have a 89 civic hatch with a turbo dohc zc in it, im just not finishing the turbo project and every time i try to hit boost i throw a map sensor code. I have the check valves on it, but they are on a 3 way tee. Does anyone know if they need to be spaced out some or any ideas on how to trick the map? </TD></TR></TABLE>

Here's the correct Check valve setup:

 

i just tried to put the check valves on sepperate tees like the diagram shows but still every time i hit boost, the car goes into limp mode and wants to cut off the car, do you think maybe i should try the vacuum line that goes from the back of the throttle body (plenum) into the map sensor?

 

you have it like this?

 

come to find out, i did indeed have them on backwards when i blew into the line on the throttle body i was able to blow freely, when i tried to suck, i couldnt, so i switched them around and went for another ride, with still, the same outcome, LIMP mode

 

yes i do have them like it shows in your diagram but is that supposed to go to the side of the throttle body(where the intake is), or through the back of the throttle body? both of them go to the map sensor

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by versatilezc &raquo;</TD></TR><TR><TD CLASS="quote">yes i do have them like it shows in your diagram but is that supposed to go to the side of the throttle body(where the intake is), or through the back of the throttle body? both of them go to the map sensor</TD></TR></TABLE>


hook it somewhere after the throttle body..somewhere on the intake manifold maybe brake booster,or fuel pressure regulator..any vaccum source..

 

can you tell me which way i should have the check valves for the map sensor, how many, and where on the throttle body?

 

think you guys for all your help, the map is finally fixed. is was the vacuum line in the back of the manifold that did it. now its boosting fine, but with alot of white smoke. any suggestions? im really hoping its not the rings

 

is the smoke real puffy and thick ? does it smell like coolant? its probably coolant...headgasket would be my 1st guess

 

Does it smoke at idle (when warm) or only in boost?

 

when the car smokes, it looks like i just lit the tires up all the way through first gear, and yes it seems like it only happens when im at boost. i let the car sit there and run while it was cooling down, and no smoke at all

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by versatilezc &raquo;</TD></TR><TR><TD CLASS="quote">when the car smokes, it looks like i just lit the tires up all the way through first gear, and yes it seems like it only happens when im at boost. i let the car sit there and run while it was cooling down, and no smoke at all</TD></TR></TABLE>
prob not an HG, it will smoke at idle once its warm (from what I've seen)
Have you chexked for oil in the DP?

 

yeah, as soon as i got back i checked the oil, and it was fine, i noticed a small leak of oil on the return side of the turbo, but that has nothing to do with the smoke i wouldnt think

 

it could be the head is lifting up. it happened to me before. try getting the head resurfaced and some ARP's. if thats not the problem, try checking if the oil return line is kinked or your seals in your turbo could be blown. just a few things to look at . good luck

 

i went for another ride today, still same thing, pretty thick smoke, only under boost. im starting to lean towards bad seals in the turbo.

 

i took the plugs out today, pretty burned, with no smell of fuel at all, do you think not enough fuel would cause white smoke? i have my fpr at 42lbs. i aslo have dsm 450 injectors i could put in. do you think i could run them without any kind of fmu or anything?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by versatilezc &raquo;</TD></TR><TR><TD CLASS="quote">i took the plugs out today, pretty burned, with no smell of fuel at all, do you think not enough fuel would cause white smoke? i have my fpr at 42lbs. i aslo have dsm 450 injectors i could put in. do you think i could run them without any kind of fmu or anything?</TD></TR></TABLE>
No, 450s have to be tuned in.

 

do you think the fuel would have anything to do with the white smoke, and if so should i try to cut the fpr up as much as i can?

 

YO MAN I BET U IT IZ HEDLIFT UNDER BOOST. D-ENGINES DO IT AL DA TIME NIGA GET ARP HED STUD KIT NO MOR PROBLEM OR CAN BE SMOK FRUM TURBO HOW DO U HAV OIL LINES RUN

 

oil lines are fine, supply comes from the oil pressure sender,and return is going into the highest position in the oil pan in a downward fall. so i know that is ok. i guess im going to have to try the arp studs, hopefully it will do the trick. i drove it again today, just driving around normaly and juat hit boost a couple of times. it kinda seems like the smoke is disapating some. any possibilites it might be the new stainless steel downpipe? what about running thicker oil?

 

i doubt if its the downpipe. its either seals in the turbo or the head is lifting underboost. have u had it tuned? how much power is it making, what turbo are you running?

 

you know, i think it is the turbo seals, considering its a SS AUTO ****. i know i screwed up by buying that, but i had no idea at the time.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by versatilezc &raquo;</TD></TR><TR><TD CLASS="quote">you know, i think it is the turbo seals, considering its a SS AUTO ****. i know i screwed up by buying that, but i had no idea at the time. </TD></TR></TABLE>

yeah man,,that could be it..i never used ss auto turbos so i cant say but i have heard about the seals going out in a very short time,,,but ive also seen garrett,and turbonetics seals go out after a short time from guys not doing the right size oil feed lines and not using an oil restrictor ..