Just watched spiderman 2 and the bit where he has the baby in the house fire and has to jump the massive gap, why didn't he just do one of his super jumps considering he is spiderman, or does he need to be in his suit?
Yes their are different types of extinguishers. Type a is used for wood products and household material. Type b Is used for grease, electrical problems and highly flammable products due to the powder material in the extinguisher. Type c is a extinguisher used for hazardous material and highly flammable and may explode. I have forgotten type d but if i remember i will get back to you.
Making it heavy as in when you turn the steering wheel? That would be upper strut mounts and/or lower ball joints. Can't relate that to the car stutters til it picks up speed. You seem to have more then one problem. Make sure nothing is loose or being pulled on in the engine compartment when hitting bumps. If it's a transverse mounted motor check the roll stop mounts that keep the motor from torque twisting on acceleration.