Hey guys i have 305 TPI and when i 'm starting my car and i don't catch it on the first three cranks it takes like 10 cranks to actually get the car to fire up and when it does it seems like the starter stays running with it for a second or two after it fires. WHY? Is it just a TPI thing?
Member
Under normal operation, the Fuel Pump comes on for 2 seconds when you first turn the key to run, and then stops. If the car doesn't start with this prime, the fuel pump will not turn on again until the ECM sees oil pressure starting to build. Cranking it for 10 seconds lets the Oil Pressure build high enough for the switch to turn on the fuel pump again.
Try turning the key to run, but wait 2 seconds to try the starter. This will allow the pump to prime the fuel rail and build pressure. In mine, you can hear the pump run,and then stop.
Try turning the key to run, but wait 2 seconds to try the starter. This will allow the pump to prime the fuel rail and build pressure. In mine, you can hear the pump run,and then stop.
That's what I usually do is turn the key forward then put my seat belt on before i crank the car over. Also idk if its my battery or what but the car initially doesn't seem like it wants to turn over but once its up and turning it spins good
Junior Member
Mine won't start at all, fuel pump turns on for a couple seconds, I crank for awhile oil pressure gets to 15 and nothing
Supreme Member
Quote:
Try turning the key to run, but wait 2 seconds to try the starter. This will allow the pump to prime the fuel rail and build pressure. In mine, you can hear the pump run,and then stop.
Originally Posted by darbysan
Under normal operation, the Fuel Pump comes on for 2 seconds when you first turn the key to run, and then stops. If the car doesn't start with this prime, the fuel pump will not turn on again until the ECM sees oil pressure starting to build. Cranking it for 10 seconds lets the Oil Pressure build high enough for the switch to turn on the fuel pump again.Try turning the key to run, but wait 2 seconds to try the starter. This will allow the pump to prime the fuel rail and build pressure. In mine, you can hear the pump run,and then stop.
Just for clarification, the ECM doesn't look at the oil pressure, there is a mechanical switch (oil pressure switch) that closes and allows voltage to the pump...ECM only controls the fuel pump relay.
Supreme Member
Quote:
Check for spark...if by yuorself, get a can of starting fluid...take aircleaner dusting off (if MAF car, remove MaF form TB), open the throttle blade and give it a few squirts of starting fluid.Originally Posted by kevinc70
Mine won't start at all, fuel pump turns on for a couple seconds, I crank for awhile oil pressure gets to 15 and nothing Jump in the car and see if it "wants to start"...if is does, then means you have spark, but no fuel.
PS..DO NOT try to keep the engine running on starter fluid.
Supreme Member
Quote:
Start a new thread my man, with that info...but we need to know what you have (TPI/TBI or carbed).Originally Posted by kevinc70
I tried that it, ittries to fire up, but no fuel pressureat engine Also would be nice to know if the car ran...the slowly sdevelope dthis no start...or you bought one not runnnig...or was the car sitting for years...etc...give all info you know about the history of the vehicles,,,saves many of us asking a bunch of questions
