Compression/HG/Coolant issue?
Posted: 13/04/21 10:04
Hi guys.
I have a 1986 MR2 N/A with 140.000 km on it. Bought new in Norway and I think its same spec as UK.
The car runs good. Starts by just looking at it, idles beautifully, revs without problems. So what is the problem then?
1. After changing fuel filter and fuel breather valve I noticed the car is using coolant. I changed and bled the coolant system some weeks ago and I have found no leaks? I had not checked overflow tank since bleeding the coolant. I have now filled it up to full.
2. I have some white exhaust. It starts around 30 seconds after starting the car. I don't notice it while Im driving. It gets less after turning off the choke and the car idles around 800 rpm.Edit: I checked again and it looks like water is slowly coming to the exhaust pipe after starting. White smoke comes when there is sufficient water in end pipe. Tasted and smelled it and its water. Took the car for a "hard" ride and no white exhaust is coming out now...
3. I did a compression test and got high results on all cylinders.
#1: 195
#2: 198
#3: 192
#4: 200
These readings are all higher than manual states, but fairly even I think. Could it be carbon buildup?
I was first thinking that there was a leak in the head gasket, but the compression test made me unsure. Do you guys have any ideas. Or what would your next steps be? Or am I worrying too much
Thanks!
I have a 1986 MR2 N/A with 140.000 km on it. Bought new in Norway and I think its same spec as UK.
The car runs good. Starts by just looking at it, idles beautifully, revs without problems. So what is the problem then?
1. After changing fuel filter and fuel breather valve I noticed the car is using coolant. I changed and bled the coolant system some weeks ago and I have found no leaks? I had not checked overflow tank since bleeding the coolant. I have now filled it up to full.
2. I have some white exhaust. It starts around 30 seconds after starting the car. I don't notice it while Im driving. It gets less after turning off the choke and the car idles around 800 rpm.Edit: I checked again and it looks like water is slowly coming to the exhaust pipe after starting. White smoke comes when there is sufficient water in end pipe. Tasted and smelled it and its water. Took the car for a "hard" ride and no white exhaust is coming out now...
3. I did a compression test and got high results on all cylinders.
#1: 195
#2: 198
#3: 192
#4: 200
These readings are all higher than manual states, but fairly even I think. Could it be carbon buildup?
I was first thinking that there was a leak in the head gasket, but the compression test made me unsure. Do you guys have any ideas. Or what would your next steps be? Or am I worrying too much
Thanks!