[Obs_1987]

I changed 2 ipr valve
Icp sensor
Hpop from my 02 now it’s taking long to start so I had put the old hpop back in and it’s still taking long to start still… I have electric fuel system like the newer trucks

 

[Patrick Feeley]

We need more information! Year of truck, year of engine (if different), and modifications such as tuner, chip, etc. Here are some pinpoint tests for P1211. Cheers!

 

[1997VAstroker]

Also. Are you using TRUE Motorcraft sensors from a trusted source?

 

[Obs_1987]

We need more information! Year of truck, year of engine (if different), and modifications such as tuner, chip, etc. Here are some pinpoint tests for P1211. Cheers!

The truck is a 1995 ps 7.3 no tuner no chips only electric fuel system

 

[Obs_1987]

Also. Are you using TRUE Motorcraft sensors from a trusted source?

Yes everything is motor craft

 

[Patrick Feeley]

If using an 02 HPOP on a 95, you will have reservoir oil drainback issues causing the long hard starts. You also may have air in the system after pump changeouts causing extended cranking until air gets worked out. Also, make sure you have the correct HPOP gasket for a 95. Cheers!

 

[Obs_1987]

We need more information! Year of truck, year of engine (if different), and modifications such as tuner, chip, etc. Here are some pinpoint tests for P1211. Cheers!

If using an 02 HPOP on a 95, you will have reservoir oil drainback issues causing the long hard starts. You also may have air in the system after pump changeouts causing extended cranking until air gets worked out. Also, make sure you have the correct HPOP gasket for a 95. Cheers!

truck starts fine now.. after a few secs the cel light comes on then the idle goes up and it has a miss…. By any chance you ever seen or heard of the return lines from the hpop collapsing ?

 

[Patrick Feeley]

Does the CEL come on when it does this? All the oil used in the HP Oil system returns back to the oil pan (there are no return hoses). The hoses connected to the HPOP are supply hoses under pressure. Cheers!

 

[Obs_1987]

Does the CEL come on when it does this? All the oil used in the HP Oil system returns back to the oil pan (there are no return hoses). The hoses connected to the HPOP are supply hoses under pressure. Cheers!
[/QUOTEyes the cel does

 

[Obs_1987]

If using an 02 HPOP on a 95, you will have reservoir oil drainback issues causing the long hard starts. You also may have air in the system after pump changeouts causing extended cranking until air gets worked out. Also, make sure you have the correct HPOP gasket for a 95. Cheers!

If using an 02 HPOP on a 95, you will have reservoir oil drainback issues causing the long hard starts. You also may have air in the system after pump changeouts causing extended cranking until air gets worked out. Also, make sure you have the correct HPOP gasket for a 95. Cheers!

 

[Obs_1987]

So when installing the 02 hpop what gasket should i use 95 or 02

 

[Patrick Feeley]

I don't know which gasket you should use since you wouldn't use an 02 HPOP on a 95 engine due to drainback . The comment on the gasket was to make sure you're using the correct gasket for a 95 engine and HPOP. Cheers!