Matt Gruber

Tip:
i don't need a gauge to check for zero.
the lifters will all tick loudly if it really has 0.
this happened only once to me, my 67 broke the oil pump shaft.
Another 0 test is to simply pull off the gauge line. with 0, nothing will come out.

Martin082514

Hello I have a 1987 Corvette just recently bought it when I turn the engine on and parked normal the rpm drop from 8,000 down to 5,000 and oil pressure drops from 30psi-40psi down to 25psi lowest so far that I've seen what could be all the reasons this happens and what I could do to fix this problem? Please help.

HeadsU.P.

You jumped on a thread thats 13 yrs old. Please start a new one.

Martin082514

How do I do that I am totally new to this forum site.

riverracer au

and a 1987 comes under the C4 section.....

dmaxx3500

10-15 is the low end of ok,[as per gm10psi,per 1000rpms] id like to see 25-30 at idle,,and 40-50 at speed

theandies

I don't know why people say this. There is a lot of good information in the old threads.

Torqued Off

Why do people have issues with old threads??? If it is technical information, as was in this case, maybe one of the posters with good information has moved on, and yet his input remains. You start a new thread on this subject, and all you have is input from current people.

If the thread is about, or questions some recent business, a new product, etc....I can see why it becomes old over time.

Lastly......why do people care that its an old thread? Don't look at the dates if it bothers you, but I like the information.

theandies

I'm glad people are using the search function. Isn't that what it's for? Find answers to your questions?

theandies

As for low oil pressure. As posted on 1-13-2005 by Paul go get a cheap oil pressure gauge and make sure it not the gauge first. That's if you have a mechanical oil pressure. I guess there would be a way with an electric gauge but since I don't have one I don't know. I could probably rig something from the oil sensor to a cheap electrical gauge if I had to though.

aswile

The gauge on my Big Block C2 did the same thing and the gauge only had a few thousand miles on it from being rebuilt. When a reliable test gauge was used it showed plenty of oil pressure at idle when the factory gauge looked to show almost zero. As another poster said...check the easy stuff first.

HeadsU.P.

Because its likely the car in question is long gone. Been sold to one, two or three other owners by now. You can't help fix that car from a thread 10, 12, 14 yrs ago. Car could have even been scrapped or sent to Europe, who knows? Start fresh with old issues / new threads!

AboveTheLogic

If you're buying an oil pressure gauge to test, get a mechanical one with the hose that goes to the gauge. You can connect it to the port next to the distributor. I have one for this specific purpose as my oil pressure sending unit and speedhut gauge don't play nice together.

theandies

Your argument make no sense. So you're saying two different cars can't have the same symptom/problem? Just because the owner who asked the original question may or may not own that car or has fixed their problem doesn't mean the original question and suggestions won't help others. The original tech on our cars is not changing.

Do you use the original service manual? WHY? After all the latest one published was way back in 1982. That was 35 years ago. That is essentially what you're saying.

HeadsU.P.

If you like old crap thats fine. I get frustrated when I start reading over the responses, dozens of responses, then realize its from 2003 ! ! ! Like I said, its better to start with a new thread, old topic.

bmans vette

So its an old thread.
The new guy needed an answer and did not know how to start a thread.
Lets remember that all of us were new guys at one time.
Answer his question and politely advise him how to post a thread.
That way he will not run off thinking we all are a bunch of old grumpy farts.

Peace
Bman

HeadsU.P.

But I am an old grumpy fart. And if you look at #23, I said please as I was pulling my pants up to my armpits. Now get off my lawn!

And sorry new guy.

calwldlife

there was a rule about how long ago a thread was
inactive and posting in it.
anywho.
having researched a few things, finding thread after thread where the original poster never gave a fix to a problem is the worst thing.

vette_jim

Same here, switched to Valvoline VR1 20/50 Dino and had a great improvement on psi at idle. 10/30 synthetic was scary at idle here in the south on a hot July day...original engine with 68k.

theandies

So why doesn't IB just delete old threads?

Now go out and throw away your ancient service manuals.

I do agree that the OP's need to post how they fixed their problem.

#Oldthreadsforever