97 chevy wont start!!!

[97chevy1500]

i have a 97 chevy 1500 2wd 4.3 v-6. i just put in a used motor and it will turn over but wont start. i have checked all conetions . i have spark at plugs,gas at the fuel rail. im stumped . any help? thanks

[Rs051802]

Are you 180 out on your timing? Check to make sure the distributor is installed as it was removed. Are you getting spark and fire? Write us back and let us know what you have and have not checked.

[97chevy1500]

i have spark at plugs. i did not take the dist. out. so i dont think its out of time but i will check. someone told me that i might need to switch the intake from the 99 blaser to the old 97 one? is there any diference in them ? all the plugs went together fine. thanks

[airdale94]

Originally Posted by 97chevy1500

i have spark at plugs. i did not take the dist. out. so i dont think its out of time but i will check. someone told me that i might need to switch the intake from the 99 blaser to the old 97 one? is there any diference in them ? all the plugs went together fine. thanks

You might need to use your old injectors to be compatible with your computer.

[97chevy1500]

it will start for a second if i spray carb cleaner in it. how do i chang the injectors? do i chang the hole manifold? thanks

[97chevy1500]

i changed the injectors. it will run but rough at idol. runs smooth at 1200 rpm and up. any help with this?

[airdale94]

Sorry I diddn't get back to you , I forgot to bookmark your thread. I see you have another one going now anyway. I would check the fuel filter first, then basic tune-up stuff, plugs, dist. cap & rotor, spark plug wires. Your injectors might need a good cleaning. If you haven't ever done it and there is some miles on them I would take it to a shop.

[97chevy1500]

i had the injectors cleaned . still runs like crap at 700 rpm. any other ideas.

[97chevy1500]

this thing runs bad. it sounds like it hiting on 2 cyl at once sometimes. has no power sounds like it backfires in the catilitc converter sometimes. any one want a cheap truck?

[airdale94]

Originally Posted by 97chevy1500

i had the injectors cleaned . still runs like crap at 700 rpm. any other ideas.

What did they say at the shop, when you had your injectors cleaned? I'm trying to chase down a idle problem in my 98 C1500 4.3l M/T. Idles high after warm when driving until I come to a stop, then after about 10 secs. it drops down.

[Blue Bowtie]

Originally Posted by airdale94

What did they say at the shop, when you had your injectors cleaned? I'm trying to chase down a idle problem in my 98 C1500 4.3l M/T. Idles high after warm when driving until I come to a stop, then after about 10 secs. it drops down.

Your problem is likely a dirty IAC stepper motor. Remove it, disassemble it, clean it, and lubricate the pintle shaft before assembly.

[Blue Bowtie]

Originally Posted by 97chevy1500

this thing runs bad. it sounds like it hiting on 2 cyl at once sometimes. has no power sounds like it backfires in the catilitc converter sometimes. any one want a cheap truck?

If you connected a newer style (peak/hold) injector pod to an older (saturated injector) PCM, there is a remote possibility of damage to the injector drivers. There is also a possibiliy that your plugs were fuel fouled in the process. I'd pull the plugs and look for a rich condition.

[texasboy05]

if u get it to start run some sea foam through it n it mght take out the mis and stop backfiring