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 R31 Pintara (ca20e) Wont Start - missing and wont start  

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BuC|<3t-H3@d
  • BuC|<3t-H3@d
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  • Joined: 31-May 09
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Post #1 post 24th October 2009 - 02:25 AM
the car started having problems about 3 months ago, it would drive fine to point B. when you get in to start it, it wouldnt start, would turn over but would not fire.
it would start a few hours later or the next day when we came back to it.
yesterday it was running fine and then started missing \ backfiring and had a loss of power and stoped, it was pushed to the side of the road and then started 5 minutes later, got about 10m and the same thing happened so the car has been tow'd home now.

we have replaced spark plugs, fuel pump, ECU (when the ECU was replaced after it broke down on tuesday it started strait away, when the old ECU went back in it had the same problem, now its missing when you try and start it with either ECU),
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pipster11
Post #2

i dunno bout the old ca20 but on the 31 skylines the crank sensor (located inside the dizzy) and notorious for failing, either that or the power transistor thingo on the side of the dizzy both tend to fail when they heat up

also, pull the cas plug off and look for signs of corrosion

BuC|<3t-H3@d
Post #3

i have a dizzy out of another pintara i was going to put in today and were do i find the CAS plug?

pipster11
Post #4

its the square plug ontop of the dizzy (at least it is on a rb r31, not sure bout the pinnys)

BuC|<3t-H3@d
Post #5

had a look, the CA20's are dual spark so theres a total of ten plugs on the cap (8 spark plug 2 coil) but no black box plug but theres 4 wires coming out of the side onto a plug that then goes into the wireing harness but i cheked that plug and all looks fine there

pipster11
Post #6

thats prob the one, the rb30 cas plug is only 4 or 5 pins

its either the cas or the temp sensor for the ecu

89_Pinnie
Post #7

this is my car, thanks for the help any more ideas would be appreciated.
i think we'll try puting the other dizzy in tomorrow and see how that goes.

Italia_85
Post #8

dont forgot with AFM too ?? try cleaner contact on it. or replace afm ? My R31 skyline, i has replace new CAS, plugs, replace AFM, power transistor, and coil, and timing too. go smooth. :-)

BuC|<3t-H3@d
Post #9

the dizzy only had 4 or 5 wires coming off but the plug just before it conected to the rest of the wiring loom had 8 or 10 pins in it or something, most probably just arent used though, i will chek the AFM tomorrow but i dont realy now what im looking for there but wouldnt that cause it to run rough rather then not start \ fire at all ?

andrew12a
Post #10

I think you'll find the wires going out of the dizzy go the ignitor module which will be mounted inside the enginebay somewhere. (most liekly on the inner guard where relays etc are found- follow the wires).
I probably wont be the connection to it, but the ignitor module itself. it's probably a black/alluminum/ anodized colour with a plug on it.
wont be expensive and sounds like the problem. buy a new one not a 2nd hand item.

they usually fail from heat. once they get too hot they're usually stuffed and wont work again the same.

BuC|<3t-H3@d
Post #11

wires cant be followed, they go in with heaps of other wires and no way of knowing what one you are looking at.
i swapped the dizzy for another one today (when i pulled apart the one that was in there the bottom was full of oil and there was 2 screws just floating around inside, couldnt find were one came from but one was to hold the rotor in place so it would have just had the shaft inside sliding within it) either way though the car still wont start...

MobileMekanix
Post #12

It will be your cas/dizzy as has been suggested. Did you try the other one yet? Make sure you time it right when you put it back in.
It keeps stopping/refusung to start after being driven because the cas has overheated. This is a common problem with the older nissan motors.

BuC|<3t-H3@d
Post #13

already swapped the dizzy, cant time it because theres no timing marks so i got my sister to keep turning the key to try and start as i turned the dizzy and it didnt fire at all. its not over heating because it can be a short trip 5 mins down the road to do it and we can leave it come back the next day to start and still have the same problem, only thing left now seeing as the dizzy didnt fix it is the CAS (if it isnt in the dizzy like was previously sugested)
where might i find the CAS in this case?

andrew12a
Post #14

It won't have a crank angle sensor if it has a dizzy. Are you sure it has no timing marks on the crankshaft pulley/harmonic balancer?

To time the dizzy without timing marks, pull the number one spark plug out, turn the engine over (manually by hand) and push something thin down the sparkplug hole like a zip tie, whatever, and as soon as you think the piston is at top dead centre or there abouts.......(as close as you can) pull the dizzy out, point the rotor toward number one on the dizzy cap, put it back in, spark plug and lead back in and see if it starts.

if not your 180 degree's out at the dizzy.
BuC|<3t-H3@d
Post #15

thats basicaly what i did to change the dizzy but i took off the rocker cover to make sure cylender 1 was on TDC.

iamhappy46
Post #16

It has a dizzy and yes, it has a crank angle sensor. Same setup is used on the FWD SR20DE.

Sounds like the old distributor has failed internally and the crank trigger wheel has come apart. The oil inside the housing also suggests that the cam bearing has failed which would also point to the crank angle trigger wheel being damaged.

The dizzy will only go in one way due to the slot in the end of the camshaft. You cant get it wrong. Line the adjustment slot bolt up in the middle of the slot which is the perfect spot for getting the car started as this is normally the correct timing mark on the Nissan engines.

Also, with the bearing failing, it is likely the rotor button has hit the distributor cap which is what has caused your intermittent failures and non starting.

iamhappy46
Post #17

There is also no ignition module in the car like the coil on plug Nissans, the CAS feeds all signals to the ECU and the ECU fires the coils via a 3 wire power transistor.

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