Lack of power on hills
Moderator: RichardW
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Lack of power on hills
I have recently bought by auction a 106 1.4 diesel. The head has now been skimmed tested and refitted, the gasket was absolutely clapped!
My problem is a lack of power on hills,evident also before the head job, and there is (in my opinion) quite a bit of crankcase pressure.My 205 diesel has none. I know what power to expect from this engine as I have had a ax diesel,same engine, so I am not being greedy.
I do not know what to get tested first,as obviously the car has a limited value,and I can plod around with it as it is, but am disappointed on hills only.Mileage is 93000.
It would be a great car for Norfolk!
Advice is appreciated. Thanks!
My problem is a lack of power on hills,evident also before the head job, and there is (in my opinion) quite a bit of crankcase pressure.My 205 diesel has none. I know what power to expect from this engine as I have had a ax diesel,same engine, so I am not being greedy.
I do not know what to get tested first,as obviously the car has a limited value,and I can plod around with it as it is, but am disappointed on hills only.Mileage is 93000.
It would be a great car for Norfolk!
Advice is appreciated. Thanks!
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Brakes fine, the car really runs well, until the hills get steeper.
Not checked filter or injectors.
What really puts the fear of god in me is the crankcase pressure. I fear one of the rings/ bores may be duff. Cold starts also sound as if they kick off on 3 then all 4 in about 5-10 seconds (all glow plugs work). As you say compression test first, but I dont know costs and that of injectors.Main dealers want you to sell the house!
The car has limited value. Or is it 'I've started so I'll finish?'.
Thanks, I'll make some enquiries. The recommended diesel specialist didn't have the time of day for me!
Not checked filter or injectors.
What really puts the fear of god in me is the crankcase pressure. I fear one of the rings/ bores may be duff. Cold starts also sound as if they kick off on 3 then all 4 in about 5-10 seconds (all glow plugs work). As you say compression test first, but I dont know costs and that of injectors.Main dealers want you to sell the house!
The car has limited value. Or is it 'I've started so I'll finish?'.
Thanks, I'll make some enquiries. The recommended diesel specialist didn't have the time of day for me!
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Finding a garage that has the gauges to do it might be not be easey, though its a relatively simple afair.
The test equipment consist of two calibrated pressure gauges, one measures the supply pressure and has a regulator so this can be adjusted to read exactly 100 psi.
The other gauge reads the outlet pressure connected to the cylinder via spark plug or injector thread.
When the supply pressure gauge reads 100 psi, the reading from the outlet gauge is read, this gives a percentage reading of cylinder effieiency, so a reading of 90 psi would mean an efficiency of 90% in that cylinder which is about what a normal engine would produce.
Each cylinder can be tested and compared with each other but thats not all, if a reading is not whats expected then its simply a case of listening to the places where air can escape.
The if air is heard escaping through the exhaust then there is a problem with the exhaust valve of that cylinder, the crank case is listened to for excessive air leaking past the rings, and the intake for leaky inlet valves.
This will tell a good operator exactly where the trouble spots are in any engine, even the head gasket will give its self away during this test if its clapped.
Dave
The test equipment consist of two calibrated pressure gauges, one measures the supply pressure and has a regulator so this can be adjusted to read exactly 100 psi.
The other gauge reads the outlet pressure connected to the cylinder via spark plug or injector thread.
When the supply pressure gauge reads 100 psi, the reading from the outlet gauge is read, this gives a percentage reading of cylinder effieiency, so a reading of 90 psi would mean an efficiency of 90% in that cylinder which is about what a normal engine would produce.
Each cylinder can be tested and compared with each other but thats not all, if a reading is not whats expected then its simply a case of listening to the places where air can escape.
The if air is heard escaping through the exhaust then there is a problem with the exhaust valve of that cylinder, the crank case is listened to for excessive air leaking past the rings, and the intake for leaky inlet valves.
This will tell a good operator exactly where the trouble spots are in any engine, even the head gasket will give its self away during this test if its clapped.
Dave
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Thanks again Dave, I'll make some enquiries, but I fear ring(s) / cylinder(s), from the crankcase pressure felt by hand covering oil filler plug, with engine running.
There also appears to be a fine mist escaping. I hope this isn't the diesel injected that escapes down a cylinder!!
Spent £250 getting head gasket done with it's skim and tests. Would be absolutely sick if it had to come off again to sort rings or cylinders.
Cheers!
There also appears to be a fine mist escaping. I hope this isn't the diesel injected that escapes down a cylinder!!
Spent £250 getting head gasket done with it's skim and tests. Would be absolutely sick if it had to come off again to sort rings or cylinders.
Cheers!
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You don't mention it being a poor starter so things may not be as bad as you think, diesel's with alot of blow can be very poor starters.
Regarding the "oil misting" have a look down the list a few pages at that very subject, this concerns a 106 though don't think its your power loss problem.
I'd check the pump timing as has been suggested, if its had a belt fitted incorrectly it could be miles out.
Dave
Regarding the "oil misting" have a look down the list a few pages at that very subject, this concerns a 106 though don't think its your power loss problem.
I'd check the pump timing as has been suggested, if its had a belt fitted incorrectly it could be miles out.
Dave
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I'll have a look for the breather. I notice there appears to be one on top of the gearbox (?). It is just like a small plastic inverted cylinder which I imagine stops liquids getting in.
It is a reasonable starter. As I've said it seems to cold start on 3 with the 4th kicking in 5-10 secs after. Hot starts really still need the pre heating, or a longer crank.
When I bought however it would not start one night and 1 glowplug needed replacing (I expected 2, as was the case with my 205 once).
You're giving me plenty to check, I'm very grateful......THANKS!
It is a reasonable starter. As I've said it seems to cold start on 3 with the 4th kicking in 5-10 secs after. Hot starts really still need the pre heating, or a longer crank.
When I bought however it would not start one night and 1 glowplug needed replacing (I expected 2, as was the case with my 205 once).
You're giving me plenty to check, I'm very grateful......THANKS!
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Here's another one for your collection.
I've only ever owned one diesel but have driven quite a few Diesel trucks; is the exhaust partially blocked by any chance?
I struck this on a Mazda diesel once & it caused lots of problems. After all, wasn't that PSAs greatest claim to diesel performance? That by fitting 2 exhaust valves per pot it gave it unprecedented power for a diesel?
Short of dropping a muffler off & taking it for a quick spin in an area not normally frequented by the constabulory, I suppose the only other option is to drop the muffler(s) off & back flush them with a hose or high pressure cleaner & see what comes out.
Alan S
I've only ever owned one diesel but have driven quite a few Diesel trucks; is the exhaust partially blocked by any chance?
I struck this on a Mazda diesel once & it caused lots of problems. After all, wasn't that PSAs greatest claim to diesel performance? That by fitting 2 exhaust valves per pot it gave it unprecedented power for a diesel?
Short of dropping a muffler off & taking it for a quick spin in an area not normally frequented by the constabulory, I suppose the only other option is to drop the muffler(s) off & back flush them with a hose or high pressure cleaner & see what comes out.
Alan S