rb20 running problems

[jwlong1379]

when i start up the motor cold it runs great...after about one or two mins it starts to idle like crap and back fire... also has almost no throttle responce

i have checked for vac leaks and i have also checked for boost leaks also timing

no idea what it could be please help

[spin]

you should check your plug and if its fould you could try to go with a colder plug its a good chance it could be your plugs

[craz4240]

Coils.....check your coils.

[skrappy]

check the plugs, coils, and fuel filter. If none of those check out then go to the MAF

[240z4u]

Colder plugs foul easier.....

Stock plugs should work fine.

Evan

You may consider testing your coolant temp sensor as well.

[mott6904]

I had the same problem when my tps wasnt set right. Is this the first time you started the engine or did it just start? I would say is a boost/vac leak, timing is off, tune up, dirty injectors or maf, or tps isnt set right.