2.0 ltr pinto running on 40 delotos they are backfiring all ready set one air filter on fire any ideas anyone

I had similar trouble with 2.0 running 38DGAS. 2 main root causes.
1. Fuel pump pressure was too high (redtop) causing fuel to be forced past float. Regulator couldnt cope with the pusles of fuel from the pump even on lowest setting. Solved by using std mechanical pump and no regulator.
2. Timing was incorrectly set. Cant remember exactly what it was, but suffice to say it was a mile out. Set it correctly to approx 12deg at tick over and all was well (FR32cam fitted).

I did have a daft problem early on in the build whereby i had the firing order wrong.

I hope this give you some pointers.

Darren.

If it's running check:-

- ignition timing
- leaks on inlet manifold
- mixture too lean
- cam timing

If it won't run check:-

- ignition timing
- cam timing
- cam isn't 180 degrees out of phase

every thing is set right af far as i know there is no air leaks any chance a jet might be wrong
and she goes like poo of a shovel

every thing is set right af far as i know there is no air leaks any chance a jet might be wrong
and she goes like poo of a shovel

i would not say its a big backfire from the carbs more a spit if you know what i mean she does it tickover upwards but it isnt reqular


joe

this type of carb is a pain in the a*** change them for bike carbs

i have no choise it what the owner wants on the car i usally fit throttle boddies

joe

perhaps you should admit to your customer that these carbs are not your forte and recommend that they are set up on a rolling road?

Carb balance.

Had it once before on a car with twin dellortos on it. Until the balance was spot on it would cough and fart and shoot blue flames out of the exhaust on the overrun.

(Ideal for decellerating at bus stops)