i have a 1990 2wd cossie,several weeks ago the bottom end decided to knock badly,so stripped the engine out and found it was knackered,i have borrower a mates spare engine and put all my exhaust manifold,sensors etc on it,but it is massivly over fueling and wont start,if i pull the injector leads off i can get it to fire and get the leads back on i can get it to run,but it kicks out black soot (over fueling) ? and when i turn it off it wont fire again,i have tried a new map sensor and also put my stage 3 chip,3 bar and greens in to eliminate any of those and it still doesn't work,the only thing that was on the engine when i got it was the inlet manifold could this be leaking any air ? p.s all sensors were working fine on my engine till it died,any thoughts welcome as i am meant to be taking this to lemans on wednesday night.........
thanks in advance