cos47

I have just put a new engine in my 4x4 but now its running it runs really rough on start-up. Sometimes struggles to fire when hot then once it does it sounds really choked up and revs to about 2000rpm then comes back down again . Its hunting a bit as well. Anyone got any ideas?

rabmc

MmmM well mine at the moment doesn`t like to idle when cold , until about 5 minutes in its fine , bugging me so it is

bttt for you anyway

gingeRS

base idle not set properly
plugs incorectly gapped/knackered
CO fuelling screw incorectly set

could be a number of things

Jasesapphy

iTrader: (1)

Possible Coolent Temp Sender or possible plugs

Got spare temp sender if you need one

cos47

Im just gunna go and change the cts so fingers crossed

charlie luciano

iTrader: (3)

Water temperature sensor?


Luciano

cos47

Right I have just been out in it again and have decided that its over fueling
the plugs are black but not wet and the oil is smelling of petrol When the old engine was in everything was fine with the new one this fult has developed. The only difference is this engine is 7.8-1 its really getting on my nerves now

cos47

Just been out looking at me car again and after a long time messing around i decided to change the injectors ,I had a set of standard 4x4 ones kicking around. Started her up and she runs really sweet !!!!!!!!!!!!!!!!!

JonnyBravo

What injectors did you have in there ?

Probably had the fuel pressure too high if they were larger injectors

ECU Monitor Enthusiast

iTrader: (1)

Coolant sensor and its wiring is the first thing to check

cos47

It had dark greens in it seems to run alot better with the std injectors in but still rough on start up

NUTTIN RILLA

Totally agree mate, first place i`d have looked

cos47

well after much fiddling and taking voltage reading from the ECU, i have found that the CTS wires were fooked.
Cut the plug off, put a new one on and ...................

























She's sweet

Cheers for your help guys