Hey fellas. A few weeks ago i had a severe oil leaks coming my front crank seal in my 1995 LS400. I immediately had the seal replaced along with the cam seals. A few nights ago i was coming home from work and after pulling into my driveway i noticed a massive coolant leak underneath my car. My first initial thought was the thermostat had gotten stuck closed or my radiator was cracked. The radiator doesnt seem to be leaking at all. After replacing my T-stat today i took it for a spin. The car once again began to get hot within 10 mins of driving. The temperature only rises when I accelerate and drops down at a stop. So after getting home i noticed my car making a weird rattling sound from underneath the valve cover. The sound is only present when the car is in drive, but immediately goes away after going into park. What can possibly be the issue? Low oil pressure? The car also runs very sluggish and doesn't accelerate the way it did before the front crank seal started leaking. I uploaded a short clip of the noise. Does this sound like an engine knock? Any feedback would be greatly appreciated. Thanks guys.

Edit: The car doesn't currently have a coolant leak. The coolant overflowed through the escape hose beneath the radiator cap on the reservoir.

 

Did you do the timing belt service with the seals?

 

did you find the source of the coolant leak? a leak introduces air into the system making it less efficient in carrying heat away.

 

No, sir. Only cam seals were replaced with crank seal about 2 weeks ago. The same timing belt was put back on because it was relatively new. Could that be the problem?

 

That's the strange part. There are no signs of leaks. After coming home from work the coolant over pressurised and escaped from the overflow hose below the radiator cap. The radiator cap is new rated at 13lbs. Tomorrow I'm going to check oil pressure with analog gauge and change the fuel filter just in case it may be clogged.

 

I worry about the off timing. Was the timing belt reinstalled correctly?

 

She sounds like an old Mercedes diesel. Are you sure the timing is set correctly?

 

I would go back in and check the belt and the timing. What year is your car?

 

Is the car throwing any codes? And did you top off the oil?

 

I never thought about it but that's a strong possibility! I took it to a local independent shop and these guys could be responsible for all i know. I'm taking in back down there tomorrow morning. Is there any way I could visually check if the timing isn't on correctly?

 

It's a 95' and is there any way I could visually inspect it if it was installed incorrectly?

 

Yes,sir. Oil was topped off after seals were replaced. The car was throwing 3 codes involving the o2 sensor and the catalytic converter.

http://imagizer.imageshack.com/img538/154/KXNNTb.jpg

 

You can check it by removing the covers for the cam gears. Bring the timing mark on the crank to zero on the compression stroke of the number one piston. The check the marks on the cam gears to the backing plates for the cams. Your 95 is similar to my 91. Or you can check lexls.com.