1994 blazer vortec v 6
 

wife has a problem. blazer ran fine but won`t start. it is getting gas past the fuel filter and spark at the plug. she said it was hard start just before. think may fuel system thanks in advance steve corum

RE: 1994 blazer vortec v 6
 

Do you have a TBI (traditional round air cleaner) or CPI (black plastic cover with orange lettered 'Vortec') engine?

I would get yourself a fuel pressure gauge and hook up to the test port on the CPI engine or install the adapter (not included in most kits) if TBI. The CPI needs 55+ psi for proper operation while the TBI needs around 15-18 psi.

RE: 1994 blazer vortec v 6
 

cpi needs 60 pnds,i just replaced a pump on mine not too long ago.try the gauge.

RE: 1994 blazer vortec v 6
 

well just replaced the pump about 2 yrs you think it might be bad

RE: 1994 blazer vortec v 6
 

As I said, 55+ is what the FSM states for both the CPI and the SCFI. You really need to get a gauge on it to check the pressure. You will also want to observe the fuel pressure after you turn the key off. If it drops, then you have a leak in the system. And for the CPI motor, this is typically the FPR.