6 replies to this topic

[Swifty75]

Hi All

I wonder if you could help. I took off the inlet manifold (94 Cooper spi) because the temperature pressure compensator was not working. I did not expect as many vacuum hoses and sensors. Anyway I managed to get it off and the tpc is knackered, I rebuilt and started to put back together and realised I should have taken photos, however after a few errors it is back together as it should be.... I think. Problem is it does not run right, it fires up, struggles, then dies with a kind of backfire.

Not sure what I have done wrong but I cannot work it out.

Any help much appreciated.

Neil

[Swifty75]

Ohhhh forgot to say..... I mixed up the electrical connections and attached the coolant temp sensor wiring to the throttle potentiometer and vice versa. Obviously it would not start when I had it wired up wrong. It does now but badly. Could I have fried something?

[Swifty75]

Just an update.

 

- I have checked all the vacuum hoses and connections, these all seem fine.

- I have the fuel lines correct: red fuelling and green (kinked pipe) return.

- All the wiring is now correct.

- The vacuum hoses to the breather/purge control are now in place

- The vacuum to the brake servo is in place.

- The TPC sensor went back in with the big circlip and was solid.

- Coolant hoses attached and system topped up.

- Accelerator cable back in place - can this disturb the throttle sensor?

 

It runs rough as if firing on 3 cylinders. It then backfires from within the manifold cuts out and you get a small amount of smoke. It is as if it is over-fueling. Thinkg was it was running fine before but I thought I would see what the problem was with the TPC!

 

Not sure what I have done and what I can do to fix it. I suppose I could do with hooking it up to diagnostics.... which I do not have!

Edited by Swifty75, 05 January 2018 - 02:27 PM.

[cian]

Have you got spark? What about the vacuum rail is everything nice and snug?

[Swifty75]

Just checked everything again and realised I had seated the manifold too low. You could virtually see into the cylinder head! I have moved it into the correct position. Seems to be running fine now!

[viz139]

There should be locating rings on the inlet ports to stop you doing that.

[Swifty75]

Just found 2 locating rings on the garage floor under the car!!!!

 

I'll get good at taking the inlet off and putting it back soon!

 

Thanks for your help.