hi guys. im having a bit of a problem. had several problems going on in my previa. we had bad gas put in the tank and had problems with the van rinning so we changed plugs and wires, made a mistake of not making note of its orientation, after researching i was able to put the wires in right(to the best of my knowledge) still wont run, just turning so decided to have the injectors cleaned, when i took that out,when i got back from the shop, all the cylinders got flooded with gasoline. we got that out.
now the engine seems to start to run but i noticed a bit of gas coming out from the throttle body. ( i took the hose off to get a bit of starting fluid in it) it ran very rough for 2 seconds then BOOM! flames spit out of the throttle body.
so here i am, not knowing what to do next and not knowing what caused the backfire. is it because i still have the wires in the wrong orientation? or there is still an amount of gas left in the throttle body.
any help will be appreciated. maybe a picture of the plug wire orientation in relation to the dist.
sorry to sound demanding.
been working on my dads daily driver for weeks now. and im on my wits end. 
enrico
now the engine seems to start to run but i noticed a bit of gas coming out from the throttle body. ( i took the hose off to get a bit of starting fluid in it) it ran very rough for 2 seconds then BOOM! flames spit out of the throttle body.
so here i am, not knowing what to do next and not knowing what caused the backfire. is it because i still have the wires in the wrong orientation? or there is still an amount of gas left in the throttle body.
any help will be appreciated. maybe a picture of the plug wire orientation in relation to the dist.
sorry to sound demanding.
enrico