New Engine, No Oil Pressure!

[james306 0]

I have just fitted a new engine in the 205, a 1.9 8v block I bought from Miles which was a quiet runner when it came out 6 months ago, put all my ancillaries etc onto it and dropped it in.

 

First start it fired up, ran a little lumpy and top end was very noisy. Started it again and ran it for around 10 seconds but still no oil pressure registering and warning light on, but not the stop light.

 

Not sure if it's noisy top end because it's not getting oil possibly? Any ideas appreciated.

[acox99 74 1 Cars]

First thing I would try doing is remove the plugs and maybe even disconnect the injectors and crank it over on the starter to prime the pump and see if the pressure comes up. More than likey the oil pump has drained back.

 

Don't know if anyone has had experience of peugeots. But on other new or refitted engines that's my procedure before starting.

[DamirGTI 343]

Check the wiring on the oil press. and oil temp. sensor .. also the wire/connector which goes to the alternator voltage regulator . They're all same fit single spade connectors , so three of them , and therefore can easily by mistake be cross connected the wrong way around hence no/incorrect reading .

 

D

[james306 0]

Cheers for the suggestions, I've not had the chance to look into this yet as I had to go back to Uni and bought myself a 406 HDI for a cheap runaround, I shall check the wiring loom when I get back, doesn't explain the noisy top end though.

 

I shall have a play and come back if I can't find the root!

[309jazzpanda 41]

Yes the top will be noisey if you aren't getting oil up there. As Alistair suggests disconnect the coil so the engine wont start and turn the engine on the key to prime the oil. Might sound obvious but is there oil in It?

[Tom Fenton 1,542]

Check the crank pulley bolt is tight. Oil pump is friction driven on the 1.9 so if the pulley bolt is loose the oil pump isn't driven.

[MikeC 10]

With an impact driver if possible.

[omega 82]

Check the crank pulley bolt is tight. Oil pump is friction driven on the 1.9 so if the pulley bolt is loose the oil pump isn't driven.

 

didn't know that.

[petert 591]

110Nm.

[james306 0]

Right, I've finally pulled her out of storage and looked into this (been a very busy two years)

 

I've pulled the sump off to have a look and found that the sprocket on the crank shaft that drives the oil pump is spinning freely on the crank shaft. Is there any way to tell if it is the keyed sprocket or friction sprocket without removing the cover etc to look? Or is it as simple as the 1.9 is friction?

 

I've got an impact gun but don't want to over tighten it and risk damaging the crank pulley bolt/crank shaft!

Edited January 19, 2016 by james306

[Anthony 1,003]

As far as I know, all 1.9's are friction driven. If it's spinning freely on the crank then that would certainly explain the lack of pressure!

 

Just tighten the crank pulley bolt to the correct torque and it should be fine. You'd be going some to manage to strip/snap the bolt though even with an impact gun.

[james306 0]

I've just checked the crank bolt and it is correctly torqued to 110Nm, oil pump sprocket still spins freely!

 

I guess it could be something giving an incorrect torque, any other suggestions? I think next step is remove the aux belt/pulley and check to see if there's something that could be restricting it from fully tightening.

[hoodygoodwood 72 3 Cars]

Normally if you nip the bolt up with a spanner that would be enough to stop the sprocket turning by hand . The sprocket then spacer then pulley push across onto the crank nose shoulder as you tighten it up and the pulley is several mm proud of the end of the crank so something must be stopping them . Could the tapped hole in the end of the crank be full of gunk so the bolt is bottoming out .

All the 1.9's I have worked on have a thin sprocket that is driven by the tightness of the bolt , 1.6's that I have seen have the sprocket as part of the spacer .

I have never used an impact gun , I have a Draper toothed tool that locks the flywheel to the bellhousing - £10 well spent .

[james306 0]

Well after taking the crank pulley off and inspecting I found that the pulley fitted was too thin, the crank nose was sitting proud of the pulley! So I took the pulley off the old engine and compared and found the old pulley was indeed wider than the one fitted. I've now swapped them over and the oil pump was tight on the shaft once again! Not really sure how to explain that one but now it's fitted!

 

Now just to prime the oil pump and see what happens!

[dcc 855]

But it was running fine before? Maybe it wasnt. Id be checking the bearings before you go any further

[james306 0]

And the result? Still no oil pressure! Turned her over with the plugs out to prime the oil pump, after a couple of turns I put the plugs back in and fired her up. No oil pressure but the warning light wasn't on this time round. Ran her for about 5 seconds. Then I lifted the rocker cover and she's still dry up there so nothing being delivered.

 

The crank was driving the pump and the sprocket was tight on the crank shaft when I checked before putting the sump back on. I guess I should have taken the oil pump off while I was down there but after realising the pulley was too thin I thought I had cracked it.

 

I should have checked the bearings while I was there too! I changed the cam belt before the engine went in and wondered if someone had put a pulley in with a spacer in to make up the gap and I'd put it back without said spacer, although I wouldn't have thought I'd have been that careless to not notice so if I have to pull the sump off again I shall check a couple.

[2-Pugs 57]

Try taking off your oil filter, and see if there's any oil in it. That is the first thing after the oil pump so you can see whether any oil is getting pumped up or not depending on whats in it

[james306 0]

Problem solved! Took the filter off and found there was some oil present but not loads, turned the engine on the starter and got sufficient flow from the cooler. The new 'Filtron' oil filter I fitted when I did the engine swap has something not right with it, it was stopping the oil flow past the cooler! Put on a new filter and Roberts your mothers brother! Oil pressure came straight up!

 

Needless to say I'm a bit annoyed it's been sat for such a long time over something and that shouldn't have failed but I just ran out of time to find out what was wrong at the time! Although there was still the wrong pulley on it for some reason.

 

Time to chuck her in for an MOT and see what needs doing to get her roadworthy, then I can start thinking about the rebuild project to begin!!

 

Thanks for your help/suggestions guys!

[Tom Fenton 1,542]

Christ on a bike, reading this has fetched me out in a cold sweat!

 

NEVER EVER EVER start an engine until you have established good oil pressure on the starter motor! At the very minimum it needs to extinguish the light JUST ON THE STARTER!

DO NOT allow it to fire until it has had oil pressure up!

Hopefully you have got away with running it what sounds like quite a time without oil pressure.

[james306 0]

It was primed before initial starting before but none of the gauges register a value while turning over on the starter so I couldn't tell if there was oil pressure, I should have put an external gauge on the block, I know.

 

The time running with limited oil wasn't as long as it reads. I'll be priming it with a gauge in the future though, lesson learnt.

 

The engine is running fine! I should add when I lifted the rocker cover and said dry, it had an oil film, just not loads of fresh oil around as you'd expect. There was at least some boundary lubrication.

Edited January 20, 2016 by james306

[Alan77 78 1 Cars]

Get yourself to GSF and get a bunch of Purflux OE oil filters, they're only £3 each. (LS867B)

[hoodygoodwood 72 3 Cars]

What exactly was the fault with the oil filter , might be worth cutting it open to see whats wrong with it . Might be able to save someone else having the same issues .