injector pressure problem? - PowerStrokeNation : Ford Powerstroke Diesel Forum
 
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post #1 of 4 (permalink) Old 06-22-2009, 11:18 PM Thread Starter
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injector pressure problem?

okay so my oil gauges is always moving while driving. at start up it wont even go to the R it's just before it and while driving it is always at the O.

Could anyone tell me why this may be accuring?

Thanks in advance

-JMFP

Burning DIESEL.....Burning DINOSAUR Bones- J.R. Cash

96' Powerstroke CC Bone stock..... DIY intake, exhaust, and PHP 6 pos. soon. Hopefully
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post #2 of 4 (permalink) Old 06-23-2009, 01:14 AM
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Re: injector pressure problem?

because it's not a true gauge....

There's basically an on/off switch, if pressure is below 7 psi (IIRC) the gauge goes to 0. If the pressure is above 7 the gauge goes somewhere other than 0. The exact postion may vary a tad with system voltage, so if the glow plugs are on (for the first couple of minutes after startup or so) then I could see the position varying a little. But the position is irrelevant, if it's not 0. And if the pressure was 0 (no oil) the engine couldn't run anyways.

'94 F250 supercab 4x4, original owner, 4.10LS, DIY elec fuel, Tymar air, Beans tunes on VA 4 position chip, Adrenaline HPOP, VDO boost/pyro/outside temp gauges, Ford digital AIC, DPPI downpipe, gutted EBPV, modded turbo ped, Con OFE, add-a-leafs front/rear, Monroe Reflex shocks, Milemarker 449SS hubs...coming soon: 6.0 IC...wish list: Stage 2's
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post #3 of 4 (permalink) Old 06-23-2009, 02:43 AM Thread Starter
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Re: injector pressure problem?

well im definitely full on oil. just wandering cause it's always moving and it seems to be low on power.

Burning DIESEL.....Burning DINOSAUR Bones- J.R. Cash

96' Powerstroke CC Bone stock..... DIY intake, exhaust, and PHP 6 pos. soon. Hopefully
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post #4 of 4 (permalink) Old 06-23-2009, 03:15 AM
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Re: injector pressure problem?

And by the way, the oil pressure gauge just indicates the low pressure side, it does not indicate the high pressure. To read the high pressure you either need a mechanical gauge capable of roughly 3000 psi, or else use software to access the ICP sensor's reading.

If you are low on power, you've got other things to check up on...leaking up-pipe donuts, clogged fuel filter, restricted air filter, clogged cat, or various other problems...

'94 F250 supercab 4x4, original owner, 4.10LS, DIY elec fuel, Tymar air, Beans tunes on VA 4 position chip, Adrenaline HPOP, VDO boost/pyro/outside temp gauges, Ford digital AIC, DPPI downpipe, gutted EBPV, modded turbo ped, Con OFE, add-a-leafs front/rear, Monroe Reflex shocks, Milemarker 449SS hubs...coming soon: 6.0 IC...wish list: Stage 2's
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