Hard to start

[Ross S]

I have the RB30 with new coil, new coolant temp sender, new plugs, new dizzy cap and rotor, fuel filter, reco'd injectors, timing set correctly etc. Everything was fine until I changed the plugs recently. Since then it takes alot to start cold or hot. Once going all is fine, idles well, runs well. I had problems getting the old plugs out and as a result, I had to pull out the throttle body. That was the only thing other than plugs touched on this occasion. I've checked and double checked all connections and for air leaks in intake, all is good.

I find the only way to start it is if I give it a bit of throttle when trying to start. Not touching the accelerator pedal, it wont start.

The only other thing is that it's over fuelling (I know this because it's popping out the exhaust when going down a hill in gear with foot off the go pedal).

Could it be that the over fuelling is leaving petrol in the pots when it's turned off therefore having to start the car as if flooded resulting in starting with foot on accelerator? The only problem with this theory is that when left overnight or longer it should have dried out making the car start as normal, but it doesn't.

any help appreciated.

[mag]

I have the RB30 with new coil, new coolant temp sender, new plugs, new dizzy cap and rotor, fuel filter, reco'd injectors, timing set correctly etc. Everything was fine until I changed the plugs recently. Since then it takes alot to start cold or hot. Once going all is fine, idles well, runs well. I had problems getting the old plugs out and as a result, I had to pull out the throttle body. That was the only thing other than plugs touched on this occasion. I've checked and double checked all connections and for air leaks in intake, all is good.

I find the only way to start it is if I give it a bit of throttle when trying to start. Not touching the accelerator pedal, it wont start.

The only other thing is that it's over fuelling (I know this because it's popping out the exhaust when going down a hill in gear with foot off the go pedal).

Could it be that the over fuelling is leaving petrol in the pots when it's turned off therefore having to start the car as if flooded resulting in starting with foot on accelerator? The only problem with this theory is that when left overnight or longer it should have dried out making the car start as normal, but it doesn't.

any help appreciated.

Dude plugs won't do it so ur going to have to check some more because something is wrong, you've got a hose or plug not right..

[Shane1989]

Check your throttle cable adjustment. When you took the TB off you may have messed up the adjustment on the cable. Also did you replace the TB gasket? Mabye you accidentally touched or hit idle adjustment screw. Could be number of things. As far as I know Mag is correct, in that plugs would not do that. Possible your plugs could be fouled though. Process of elimination. Also check your plug leads. I had your problem, or something simular to it and after I changed my leads it was hard to start cold but after it warms up it was perfect. But now that I have changed my leads It starts great without throttle.