Engin breathing heavy, oil contamination?
Turbo Mini Forums

Hello.

My car has been off the road for about six months. this was down to a number of things, carb blocking up, flywheel coming loose and the timing wheel slipping.

All three hve been checked and fixed. Ive had the car running for a few runs, but there are some things worrying me.

1). Im not getting a reading for the oil pressure sender or the oil temp. when there earthed, the gauge works.

2). the oil breathers are breathing very heavy and there are bubbles coming out of the timing and dropgears breather.

3). on my last run i might have blown a headgasket or a bypass hose (there was a backfire at one point). water like liquid from rad side on the bulkhead, rad, engine steady. There is some smoke out the back, but not all the time, it did smoke before.

the two runs were less than five miles

Ive had the head of, but didnt change the oil, as it was fresh and hadnt been run on, is it possible that water could have gotten into the oil? causing 1 & 2

the bypass hose is a little bugger to get to and ive had problems with it before.


Thanks for any help paul.


edit i will be adding a large breather where the fuel pump used to be.

Edited by wintersurferuk on 23rd May, 2011.

Not a blown headgasket or bypass hose, loose thermostat bolt.

Backfire was out the back of the car.

still not getting any reading from the gauges, going to put the airline through it to see if i can get a reading

Not sure on #1, but #2 worries me. Usually bubbles and lots of outbound gasses means heavy blowby somewhere. I cracked a ringland on one of my pistons a while back and oil bubbled out of my breather filters... :(

Eric
my pics.... http://www.fototime.com/inv/7AAF37CF3EFA956

for what you have put i would put it down as a worn engine mate the back fire maybe timing check your points gap first or it can be oiled on the exhaust valves (carbon) making it back fire

1293 Turbo mini

I'll dig out my leakdown tester, get it mobile and we'll check it at garys.

1293 Turbo mini

I'm going over tomorrow to lend a hand.

In the 13's at last!.. Just

Gary As I said to Paulo earlier,

The senders cold have lost their earth, they only earth through that sandwich plate, which could have isulated itself from the block as there's gaskets and oil in the way, also Anodising is an insulator. its worth earthing the sensor bodies to the block to see if they jump into life.

I reckon get 50 or so miles on it then do a compression check

Will try that out. If it works I'll make something up to earth them better permanently.

Do you think he's got a bit of a ring sealing problem causing the breathing? All that fuel he chucked down there wouldn't help eh!

We'll have a play, no doubt be speaking to you tomorrow :)

In the 13's at last!.. Just

its possible,

any fuel & water left down there needs to evaporate off though,

it could be for example that there is the same amount of blowby as there used to be, but steam coming off is making it look far worse than it is, think tail pipe on a cold morning.

There's an easy way to see if it's the rings.

Do a compression test on all four cylinders and make ante of the figures. Pour w little oil one at a time into the bores and re do the test. If the second test give a higher reading you have worn rings, or excessive wear or both.

thanks for all the input!

I'll try out the earthing today, see if I can get any readings, that would explane why im not getting a reading from both.

As for bubbles, it is worrying. I'll wait for joe to come over, test the rings. :(

I'll start making a large breather for the fuel pump, keep me busy.

earthed the sandwich plate, and the gauge is work now.

done an oil change, and had a quick spin and so far, no bubbles! will need a propper drive to see and an extra breather on the back wont do any harm.

thanks for all your help, fingers crossed, it will stay fixed.