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Coil Help - My Rb Sounds Like A Wrx!

Sammy

By Sammy,
in General Maintenance

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Sammy Collaborator

Sammy

Posted
Posted

Hey there

I have a Silvia with an rb20det in it

Currently one of my coils - second from the back is overheating/melting

and is NOT sparking either.

---It sounds like a WRX-----

What would be wrong?

We have tried a range of new rb20 coils and checked the spark plug and all are fine :sleep:

any help would be appriciated!

cheers

sammy :)

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SECURITY Grand Master

SECURITY

Posted
Posted

could be a dead CAS, although im not sure if its capable of making only 1 not work.

it could also be your igniter pack (again, im not sure if rb20's have them).

then again, it could be a cracked ring/land. get a compression test.

Sammy Collaborator

Sammy

Posted
  • Author
Posted

* she lol

we have bought some coils and tried them,

however is it possible that red top and silver top coils are different???

cause despite the fact that we bought 'rb20' coils - they are not exactly the same as the ones in the car.

Rancher Community Regular

Rancher

Posted
Posted (edited)

Red top and silver top coils are totaly different. Just to give you an example, Red top coils fit onto the CA18DET and vise versa. Silvertop coils only fit the Silvertop.

Try getting the right coils, if thats not the problem, then change the igniter (the square thing ontop of the cover) And take that cover off! it traps heat under it and melts coils.

A dodgy CAS wont make one coil not fire, if its the CAS it wont start at all.

Edited by Rancher
subzeroR33 Mentor

subzeroR33

Posted
Posted
Hey there

I have a Silvia with an rb20det in it

Currently one of my coils - second from the back is overheating/melting

and is NOT sparking either.

---It sounds like a WRX-----

What would be wrong?

We have tried a range of new rb20 coils and checked the spark plug and all are fine :)

any help would be appriciated!

cheers

sammy :(

My car has the same problem at the moment it sounds like a outboard motor.

Ive been told it is a temp sensor fouling the plugs?????????

SECURITY Grand Master

SECURITY

Posted
Posted
coils are different from the ignitor pack. its the black box that sits at the rear of the engine above the coils

yeah i know, i swear i read it as coil packs when i was replying :( . must have been in another world.

sorry mate.

  • 5 weeks later...
Eatan8 Contributor

Eatan8

Posted
Posted

Hey my car is having the same problem i have a s2 r33 and have put splitfire coils, new plugs in, a new cas and the ecu looked at i am going to try a new ignitor pack if this doesnt fix it is there anything else i can try. Cheers

mid life crisis Veteran

mid life crisis

Posted
Posted

mine did the same thing (rb25) replaced the ignitor pack and all was good but then few days later fryed another ignitor pack turned out to be a dodgy coil that kept frying my ignitor so i replaced with splitfires and bought a 3rd ignitor and all is well now

wasnt me Collaborator

wasnt me

Posted
Posted
Hey my car is having the same problem i have a s2 r33 and have put splitfire coils, new plugs in, a new cas and the ecu looked at i am going to try a new ignitor pack if this doesnt fix it is there anything else i can try. Cheers

if you have a series 2 they dont have a ignitor pack, are you sure you got the right splitfire coil packs? as series 1&2 are different

Eatan8 Contributor

Eatan8

Posted
Posted
if you have a series 2 they dont have a ignitor pack, are you sure you got the right splitfire coil packs? as series 1&2 are different

Yea i realised that after i posted it lol. I have only had the car a while and it had them when I got the car and it ran fine and have been told the coils where ok by two diferent shops but i will check agaian anyways thanks.

  • 1 month later...
R31vhead Explorer

R31vhead

Posted
Posted (edited)

Hiya,

First of all, redtop coilpacks are different from silvertop ones.

Second of all, I think you should double check the wiring into your ECU. Especially since you've done an engine conversion, it's very likely a wiring issue. Look up the wire for cylinder #6 and double check its the right wire for power to that cylinder.

I had the EXACT same issue with my car (RB20 into an R31) and it turned out that the coilpack wire had been spliced directly into the temp sender. The result was a constant signal to the coilpack which melted it. Not fun and not cheap.

Good luck, let us know how you go.

Edited by R31vhead

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