reevear

DPFI to MPFI swap. A6 / Z6
TD21? distributor
its getting fuel and when i pulled the plugs it was getting spark.
when i go to turn the car over it wont fire up it white smokes out the header and backfires.
i can only start the car if i bump the starter with a screwdriver.
anyone have any idea why its not starting?

do i need new plugs?

reevear

and i checked to make sure the motor was in time and it checked out.

BiGZ

Are you staying OBD0? OBD0 mpfi dizziez = TD02U (D16A6 engine = crx si,civic si,civic sedan ex) or TD18u (D15b6 engine from crx hf ) (have to notch/modify mounting legz for z6,for y8 they bolt right up 2 teh y8 head).Your dizzy,inj'z,and ecu HAVE to match OBD version.If you meant TD41u = d16z6 vtec, = OBD1 vtec (and you would need OBD1 ECU + Inj'z) Of course all of this is covered in FAQ stickied @ top of forum...

reevear

running a p28 ecu with a jumper harness. injectors are from an eg. and yeah i do believe its td41u its so faded tho i couldnt really tell.
i have been reading a **** ton of forums tryin to locate someone with the same problem but i have yet to find one. or maybe im not searching the right keywords?

BiGZ

k,I'd suggest going over your dizzy wiring again + again (where most dpfi - mpfi swapz run into problems)

reevear

correct me if im wrong.
wiring up the dizzy
do i need 4 crank sensors hooked up or 2?

c1&c2 splice together with b10&b12 after hooking them together i run blue green and blue yellow from the dizzy over to b10&c1 and the other wire over to b12 & c2? which in the end all three wires are connected together? is that right?

BiGZ

IIRC,that'd be a big wrong.(and solder+heatshrink all connectionz)

is from http://www.angelfire.com/d20/hcivic88/dx-siwiring.html for OBD0 mpfi swap,for OBD0 --->OBD1 wiring info: https://honda-tech.com/forums/honda-crx-ef-civic-1988-1991-3/d-i-y-faq-obd-0-obd-1-pinouts-conversion-help-1319235/

G'luck...

reevear

so c1 i cut it in half with wire exposed on each side of the cut engine side and ecu side. on the ecu side i run it straight to the dizzy? and the comparment side i run to b10? and then for c2 i did the same but c2 compartment side goes to b12?

reevear

**** selling the car as is or part out

ExtraBlackRex

Don't quit on it.

Let's leave your wiring issue out of it..

The condition of the motor, any history on it?? Honestly, it sounds like maybe you have some severely bent valves which can create serious starting issues as well as back firing during starting (It'll sound like a series of small pops, occasionally giving you one HUGE one from time to time, can be heard out the exhaust and even in the intake mani...)

No sealing of the valves = No compression = NOTHING, even with the presence of fuel and air and a spark. Honestly i'd yank the valve cover off and take a gander, it's worth the shot at this point.

reevear

im no longer getting spark again i am misreading the write up or something... have no idea what it means to de pin c1 and 2 but cut enough length for the next step?

reevear

took off the VC and the valves dont look bent or tweaked in anyway...
with the VC off and me roatating the crank it compresses out air so i have to get getting compression right?

OneBadTurboCRV

https://honda-tech.com/forums/honda-crx-ef-civic-1988-1991-3/88-91-crx-ef-civic-frequently-asked-questions-faqs-1508680/

reevear

holy fat tit balloon nipples. that was a lot of help it kicks over everytime now! hahaha.
dizzy was wired wrong as hell. when i de pinned it i re pinned it wrong. i couldnt find the wiring color i had

OneBadTurboCRV

Ahh... the power of searching and reading. It's mystical powers escape most people on the World Wide Web (Internet).

reevear

hahah thanks dood. it turns over every time now.. i think i need new plugs to actually start

reevear

would fowled plugs cause the motor to backfire everytime?
its not really like a backire its more like a puff sounds.

OneBadTurboCRV

If it is backfiring most likely it is a timing issue...

reevear

i checked the motor timing. what else timing do i check?

OneBadTurboCRV

There is mechanical and ignition... Which timig did you check?

reevear

it was the dizzy. i got it runnin now! thanks for the help my man.