Oil pressure during starting

GregL · Post by **GregL** » Sun Apr 19, 2009 7:56 pm

In the past, when I cranked the engine, the oil pressure would be zero at first, then rise up while still cranking, and I'd have good pressure during running. But I'm having starting problems now, and while I don't think oil pressure is necessarily the problem, the gauge doesn't show any pressure at all during cranking (endless cranking). Should I be worried?

Post by **Cal_Gary** » Mon Apr 20, 2009 4:37 am

Mine shows no pressure when cranking either Greg, so I wouldn't be concerned-it gets good pressure as soon as it fires up.
Gary

Nickathome · Post by **Nickathome** » Mon Apr 20, 2009 5:47 am

Mine too. Needle doesn't move until engine fires up.

peter e mark · Post by **peter e mark** » Thu May 07, 2009 9:55 am

It stikes me that all your engines should not be cranking very mush in order to start! May I suggest checking your timing, set your ignition pionts and re gap those spark plugs ! On my rig I also put a guage on my fuel inlet line to carb to confirm 4.5 PSIG fuel pressure ..Even in the cold of new york winter it starts immediatly (sorry, have to bragg sometimes)

MSeriesRebuild · Post by **MSeriesRebuild** » Thu May 07, 2009 2:56 pm

GregL wrote:In the past, when I cranked the engine, the oil pressure would be zero at first, then rise up while still cranking, and I'd have good pressure during running. But I'm having starting problems now, and while I don't think oil pressure is necessarily the problem, the gauge doesn't show any pressure at all during cranking (endless cranking). Should I be worried?

Worried, no, but investigate. It is typical for pressure to rise before the engine starts if you are cranking an extended amount of time. If yours was showing pressure prior to start up & now all of a sudden it no longer does, there could be an issue. I don't believe that would be the issue as to why it isn't starting readily, but anytime obvious changes like this are noticed, there is certainly a reason for changes, it pays to check out what may be going on. Issues like a fuel pump diaphragm going bad & dumping gas into the crankcase & diluting the oil is just 1 example that could have happened. This would severely thin the oil & cause a low or no pressure reading. Check things out, better safe than sorry for sure.

Nickathome · Post by **Nickathome** » Fri May 08, 2009 3:30 am

peter e mark wrote:It stikes me that all your engines should not be cranking very mush in order to start! May I suggest checking your timing, set your ignition pionts and re gap those spark plugs ! On my rig I also put a guage on my fuel inlet line to carb to confirm 4.5 PSIG fuel pressure ..Even in the cold of new york winter it starts immediatly (sorry, have to bragg sometimes)

Yeah but what do you consider immediately? My truck starts usually within about 3 to 5 seconds of cranking. I think that's pretty good for a 45+ year old truck with unreworked engine.

Post by **Cal_Gary** » Mon May 11, 2009 5:50 am

Mine usually fires up within 3 to 5 seconds-the oil pressure needle climbs right up as soon as it starts.
Gary

peter e mark · Post by **peter e mark** » Mon May 11, 2009 5:50 pm

Dear NICKATHOME and all other soldiers on this thread...I read with a great measure of dismay, the use of the phrase: " A THUCK OF THIS AGE" And I must beg your pardon, but machines are not aware of thier age. Actually, it is quite an insult ! Whilst the reference to our vehicles in terms of gender can be quite indearing, we must refrain from assuming they are subject to , or limited by, temporal experience. IT'S A MACHINE GOD DAMNIT ! I therefore leave you all with the following sober advice : keep your machines in good shape; it is entirely up to you ! No more excuses ! if your truck breaks down, doesn't perform, or otherwise does not live up to your expectations it is a reflection of how you are, or are not, caring for it !

Post by **Cal_Gary** » Tue May 12, 2009 5:48 am

Take it easy Peter! You've made some strong statements that aren't entirely true and include profanity which I'm certain will be censored out and could be considered offensive to some of our members. Differing points of view are welcome, however, to blast any and all who posted here by saying that each and every time one of our trucks gets dead-lined by stating it is our own fault is simply untrue. Vehicles of any age may break down regularly, regardless of age-hence the "Lemon law". Those who have many miles and many years on them are even more likely to breakdown because time, and Mother Nature attempt to reclaim them despite the strongest efforts of the vehicles' owners.

This forum has been a rock of support for all of us-let's keep it that way.
Gary

peter e mark · Post by **peter e mark** » Tue May 12, 2009 3:22 pm

Cal_Gary I do stand corrected. And Thank You for pointing this out...Peter Mark

Oil pressure during starting

Oil pressure during starting

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Re: Oil pressure during starting