Long cranking before start

[dmltml]

95 SHO, takes 3-5 seconds to start vs 1-3 that is normal. Cam sensor has been replaced. Did a lower 60 about a year ago. Any thoughts? Have done nothing with the fuel system. Plugs are new, wires new. Help

 

[Irish Pride]

Battery or Starter could be weak. Its that time of year.

 

[SHOdded]

Check for oil leaking from cam sensor area, and from the oil filter area onto starter. Fuel pump priming OK? The fastest start I have found is to put the ignition into RUN until the seatbelt chimes die out (6 seconds or so), then START. Fuel & engine oil primed at point.

 

[rubydist]

try turning the key to 'on' for 3 seconds, then off again. repeat 4 times. then attempt to start. let us know if that makes any difference.

 

[Off Road SHO]

Yeah, what^ said. Check for a fully charged battery and that it spins the starter rapidly. Then check for good fuel pressure after the key has been rotated to run for 2-3 seconds (but not yet to the start position). After the fuel pumps stops its priming run of 1-3 seconds your fuel pressure should be at about 35-39 psi and stay there while you crank it. If it doesn't, you have a fuel pressure problem that needs to be tracked down.

Tom

 

[sperold]

If every now and then, it starts up quickly, then zero in on the cam sensor... even though it is new.

 

[dmltml]

Thank everyone, The starter cranks fast, very healthy so I am going to put this on the back burner, only one year old as well. I don't have a fuel gauge yet but I am experimenting with the extended key in the on position, This seems to have mixed results but better. I havent tried then on for 3 seconds X4 but I will, what the heck. I hate to get a new cam sensor but haven't rulled that out yet.

 

[kevinspann]

Perks of owning a SHO. Starts first time, every time, most of the time, eventually.

 

[EL SHO]

Perks of owning a SHO. Starts first time, every time, most of the time, eventually.

and when everything is working right, something else or the same part brakes down again. It's a lifestyle

 

[wood_e]

fuel pump check valve. Check the line pressure at the schrader valve