First Time Engine Running

[jmspec]

Just fired up the engine on my Super spec for the first time.

Been building of and on for too long now and after a good time at Goodwood recently, decided that a good effort was needed.

The engine fired on the second attempt.

The problem is, it idles at 4000 rpm.

It must be one of the connections I've made.

I have installed and Emerald ECU and my engine is a Rover T16 2000cc turbo.

Any ideas would be helpful.

Thanks

Jez

[Guest mcramsay]

Is the engine actually revving it's tits off or is the tacho saying its Idleing at 4000? The only way the engine could physically get up to that kind of rpm is of the throttle butterfly was not fully shut.

[jmspec]

I had a good think whilst driving this afternoon and come to the same conclusion

I'm just not that confident with all the connections made. Saying that, it did fire up

[Guest mcramsay]

Well is the engine actually revving up? Or is the tacho reading false?

[jmspec]

The engine is actually reving up

I haven't actually looked at my Rev counter yet but the laptop connected to the ecu says 4000

From the sound of the engine I would say that's resonavly accurate

[Longboarder]

Looked at in one way an engine is an air pump. The ecu just adds fuel appropriate for the amount of air being pumped. Regardless of what the fueling is doing if it revs to 4000rpm then it has more air being taken in and compressed than it needs to idle. So you have one or more throttle butterflies open too much, an idle control bypass open too much or an air leak. (For the engine to start and run at all the ecu must be doing its thing about right.)

 

Nigel

[jmspec]

Thanks for the help chaps.

Turns out it was a bit of all the above.

The throttle was slightly stuck open and I'd not connected the pipe for the MAP sensor correctly so an air leak.

Hopefully onwards and upwards now.

Thanks again for the help

[alanrichey]

Be interested in all the details when you finish, as I think the 420 ECU is pretty unobtainable now or even if you get one no-one knows how to disable the immobiliser, so to know how to replace it with the Emerald is a useful backup.

[bullfist]

I guess you mean Rover T20. I thought the T16 was the 1.6litre.

I could be wrong, but I'm sure my Superspec is a T20.

-steve

[jmspec]

Alan,

I will let you know how I get on.

The engine is running really lumpy at tick over at the moment but these are early stages.

 

Steve,

I'm pretty sure its a T16, but I have been wrong many times before.

Just done a search and Im still sure its a T16 as fitted to the Tomcat etc.

[alanrichey]

I guess you mean Rover T20. I thought the T16 was the 1.6litre.

I could be wrong, but I'm sure my Superspec is a T20.

-steve

Google doesn't return anything on 'Rover T20', but 'Rover T16' looks like the one Superspecs have

Rover T-Series engine - Wikipedia, the free encyclopedia

 

I suspect the '16' refers to the number of valves, not the capacity.

Edited July 20, 2015 by alanrichey

[bullfist]

LOL I guess that's why googling T20 never returned many results. I think my engine number started T20..., so I guess that's where I'm getting T20 from - but I could still be very wrong.....

-steve