Changing a TB42 efi and putting a Tb42 Carby in

[Trolzo]

Hi All

Ive got a 1993 tb42efi and it has alot of problems. People that use to own it befor me are saying it needs a new ecu.... But id like to know if i rip that motor out and put a tb42 carby in would i need to change the wiring loom?

Cheers Zoe

[Clunk]

Can you elaborate on what "alot of issues" are? Is it dual fuel or petrol only?

To rule out the ECU, do you know anyone else with an EFi that you might be able to borrow their ecu for a short time?

[Trolzo]

Its blowing heaps of blue smoke, seems to only be running on 2 cyclinders.
Its petrol.

No i wont be able to get hold of another ecu either.

[the evil twin]

ECU won't cause blue smoke... thats oil getting into the combustion chambers.
Would also be unlikely to be the ECU to drop 3 or 4 cylinders but possible I spose... much more likely to be injectors or spark

Changing the engine will fix both those issues but I wouldn't be going back to Carby unless I was 100% sure the ECU was toast and the engine was stuffed

[Trolzo]

Ill start checking for spark problems first, is it possible to test the ecu somehow?.

[4bye4]

G'day mate, not to be stupid, but you haven't picked up some contaminated fuel by any chance have you?

[Trolzo]

Unlikely, i brought the Patrol cheap monday, i knew it had problems but we are trying to sus out what the problem could be

[MudRunnerTD]

Unlikely, i brought the Patrol cheap monday, i knew it had problems but we are trying to sus out what the problem could be

By teh time you chase another motor to drop in you will likely buy another car. buy another car and use this as your parts car i'd say to be honest.

[mudnut]

First thing is to do a compression check. Then a compression check with a couple of small squirts of oil onto the bore of each cylinder. If the reading is significantly higher than before the oil, the rings are stuffed. If the reading is low and stays that way, suspect leaking valves.

[Trolzo]

Gday Everyone

We noticed that the raditor was using a fair bit of water very quickly so i assume that the head gasket is gone with this motor.

I was lucky enough to find another engine with the ecu still attached for $300, i will be replacing this engine with that one in the next coming months. Thank you for all your help.

[the evil twin]

Gday Everyone

We noticed that the raditor was using a fair bit of water very quickly so i assume that the head gasket is gone with this motor.

I was lucky enough to find another engine with the ecu still attached for $300, i will be replacing this engine with that one in the next coming months. Thank you for all your help.

Definitely the best option IMHO and with all the symptoms you now mention I would say 99% sure that all your issues are engine related

Do yourself a favour and, unless you know it is OK for sure, do a compression check on the $300 engine.
If that is OK I would only change the engine at first.
I would also suggest pulling the injectors and getting them serviced.

Those first generation ECU's were very reliable, I wouldn't change one unless I was sure it was knackered.

[jcpatrol]

Definitely the best option IMHO and with all the symptoms you now mention I would say 99% sure that all your issues are engine related

Do yourself a favour and, unless you know it is OK for sure, do a compression check on the $300 engine.
If that is OK I would only change the engine at first.
I would also suggest pulling the injectors and getting them serviced.

Those first generation ECU's were very reliable, I wouldn't change one unless I was sure it was knackered.

Price must have dropped dramatically on those TB42 engines.
Last time I was there TB42 engines were lot more expensive than that.
Most definitely a good idea to bench test the engine before installing.
Usually when something is sold cheaper than the market price, there is a good reason behind that.