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Author Topic: Slow drip at front of oil pan? coolant  (Read 5582 times)

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Offline BenM

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Re: Slow drip at front of oil pan? coolant
« Reply #15 on: February 13, 2012, 10:58:47 AM »
Are you getting a metallic ticking or a hollow sound? Engine for sure or the exhaust/cat?

Metallic sounds may just be metal contracting, like your exhaust. That may depend on how hard you drove your car before you turned it off, or it's just an old exhaust moving as it contracts. Your cat will also be hotter until your engine has switched into closed-loop because the engine is running rich, so it will ping as it cools.

A more hollow sound may be the coolant boiling as the airflow goes away. If your last mile hasn't been easy and let your car cool down some, it's nice to let it idle for a minute. (That's very good advice for cars with oil-cooled turbos.) It's one of the reasons that most electric fans stay on for a short while after the engine turns off.
NSS#47184

1987 AMC Eagle Sedan -- 1976 Pacer Coupe -- 1968 Pontiac Tempest Custom S -- 1940 Mercury (& a 2002 Jetta Turbodiesel, 5 spd., the Wife's Daily Driver)

afree4all

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Re: Slow drip at front of oil pan? coolant
« Reply #16 on: February 13, 2012, 12:51:33 PM »
I Don't have a Cat. on this one never did, however the exhaust it just piped together so I could fire it. And I did have to take the air tool and wire wheel & Brake clean most of it cause was caked in gunk and sat for 2 years.  When I fired it up it smoked and stunk up the backlane.

I have only driven this once since I fired it up few weeks ago and ONLY around the block 1 min. drive LOL   
The ticking happened before that and still does when letting it warm up in the driveway.  (till top hose gets hot, then shut it down)
Hard to describe a sound in text form but kinda a tick/gulp,    so maybe kinda hollow. 
The EGR & crossover tube is installed but not hooked to vacuum yet. 
I am just trying to get it tuned abit so I can sell it.  Haven't touched carb yet and I belive that the previous 4.0 head swap was RICH RICH , but at 10 degree inital (HEI) timing and engine around 1200-1400 RPM I am pulling 20 on vacuum gauge and about 15-17 when all warmed up, and choke fully open.
On paper the carb is set pretty close I would say?
It is warming up abit and I have a guy coming to look @ it tonight so I better go play some more.
Maybe My camera will get a good enough sound clip on video, I will see if I can get a clip.

Offline BenM

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Re: Slow drip at front of oil pan? coolant
« Reply #17 on: February 13, 2012, 05:28:27 PM »
It may have air bubbles in it yet, if you don't really work them out ahead of time. It takes a few cycles of heating and cooling to purge the system, you just have to keep an eye on the overflow and keep it full. The varying load/conditions help.

It sounds like you are just on the low side of vacuum, probably just needs fine tuning. With an unknown carb and a non-stock ignition it'll take some tweaking, then make sure there's no hidden vacuum leaks.
NSS#47184

1987 AMC Eagle Sedan -- 1976 Pacer Coupe -- 1968 Pontiac Tempest Custom S -- 1940 Mercury (& a 2002 Jetta Turbodiesel, 5 spd., the Wife's Daily Driver)

afree4all

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Re: Slow drip at front of oil pan? coolant
« Reply #18 on: February 13, 2012, 06:08:23 PM »
Ok new electronic temp gauge on the front port of intake, gauge reads about 180 -185 and hoses are all hot. seems to peak out around there. The sender is installed on a Brass "T" so not perfect but at least can see if way to hot.
I adjusted the carb abit and now get a steady 20 in vacuum with it warm and choke open @ 1500 RPM also have the EGR hooked up through the "CTV"  in intake from a ported vacuum source.
I really need to reseal the valve cover then, I may take it for a good ride get some good gas and blow it out.   The carb was really rich lol about 3-3 1/2 turns from out and, now they are 1 1/2 - 2 from out.
the shut down ticking is still there but doesn't seem to last as long now.
Also the engine has that phantom tick that comes and goes at idle/low throttle as it gets warmer. When I drove it before at speeds the ticking was gone & come back at a light. Its been in every 4.2 I ever had. to this day can't figure out what it is.  Fresh head and even retorqued the rockers. If it is a bearing i have never had one fail, so I dunno.
So this guy that looked at it has a few toys he may want to trade, I think I am interested in this Honda CX500 Bike he has.  A neat looking bike anyway.  Looks cool as a cafe' racer  If you like that look.
Prob. a reasonable trade?

 

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