i have a 2001 isuzu rodeo sport and fir some reason it runs very rich. also when i start it up cold and start driving the engine sort of bogs. it is like a back fire inside the engine. no check engine light. anybody no what the problem is?

 

how do you know its running rich?if so check intake gaskets an check fuel psi regulator,just pull the vacuum hose off while it running you shouldnt see any gas come out the end of the regulator.is so get it replaced ASAP.