I have a 86 Toyota pickup with a 22r out of an 83 just replaced the timing chain cover cause it had a crack. And now it will not start. It cranks and has good spark just won't start. It makes a almost backfire like noise out the exhaust when I'm trying to start it. Am starting to get real pissed with this thing. When I turn the key over it doesn't sound like the fuel pump is pressurizing. And I'm totally new to Toyota's so ant help would be nice.