Jump to content

405 Mi16 Restoration.


Jayden M

Recommended Posts

  • Replies 102
  • Created
  • Last Reply

Top Posters In This Topic

Top Posters In This Topic

Posted Images

Nope I couldn't wait until tomorrow hahaha. So yeah it wasn't that little regulator. The supply line to the fuel rail just is not getting enough fuel. Its pressure just seems so low. The outlet of the fuel pump is real high pressure though. So its got to be something between the fuel pump, and the fuel rail supply line, fuel filter maybe? fuel lines themselves? no leaks anywhere. Also I poped rail out to see if injectors were spraying anything, and they were only dribbling a bit, but some was coming through

Link to comment
Share on other sites

i've seen rubber fuel line collapse on the inside, all lines on the 405 are straight, and at 30 years old is good to replace them, rubber fuel line can be bought at any parts store, buy stainless hose clamps, if a rember right, there are 2-3 sizes on it be sure to buy high pressure fuel line.

Link to comment
Share on other sites

Remove the old one and take them to a parts store to match them, i cut my old hoses diagonally so they can come off easily, be careful at the external fuel pump is plastic and the sender unit at the fuel tank. There is also a small peice of fuel line at the drivers side rear door, i've had to replace it couple of times.

Link to comment
Share on other sites

Im just gonna replace the filter, and tank pump, just to get it out of the way, and to eliminate causes. The service manuals says to use a screwdriver & tap it on the pump lock ring, but I think my pump is a little stuck after sitting for years, because the plastic lock ring is breaking off as I tap it... is there a tool or any ideas?

Link to comment
Share on other sites

  • 2 weeks later...

Today my new fuel filter & in-tank fuel pump came in the mail, so I installed them both on the Mi16.

Started the car, and after the lines pressurized the car fired right up. Had smoke for a few seconds, but cleared up in no time.

Idles at 1200-1300 RPM when its cold (I didn't want to run it any longer without a new timing belt).

Didn't rev it any, again due to it past the mileage for a new timing belt.

Every now and then there is a misfire, pop, but that might go away after letting it run for a while. (It's ran for about 30 seconds in the past 16 years).

All this car needs now is just a Timing Belt change, and some new tires!!!

Link to comment
Share on other sites

  • 5 months later...

Finally an update on this car!

For past few months I had the timing belt off (by cutting it), but had a baaadly stripped tensioner pulley bolt. I had drilled through the car into the bolt. I tried vice grips, I tried so much stuff... and its what took me so long... But here I am finally got the tensioner bolt out by having another nut welded onto it. Worst thing I have had to deal with on any of my cars by far.

Still im having trouble getting the new belt back on, but I'll get there eventually.

IMG_20210505_120010.jpg

 

IMG_20210505_095203.jpg

IMG_20210505_095037.jpg

Link to comment
Share on other sites

  • 3 months later...

After months the timing belt is on!!!! Now is the problem of tensioning, I have no idea really how tight it should be, and Its been 1/2 a year since the old belt was on, so I cant remember how it should feel.

I took a small risk to get the belt on - I used a wrench to turn the camshafts to give me more slack on the belt in certain places. Only turned the cams a few degrees, so hopefully no damage was caused.

Link to comment
Share on other sites

It's not really fun to tension the belt on this engine:

You need to do it on both sides with the cams and crank locked in place then you rotate the engine for two crank turns (in the running direction) and check if the tension is still good and the crank and cams can still be locked in place. If not you have to do it all over again.

Link to comment
Share on other sites

Belt tensioned, everything put back together. Engine doesnt start. I took fuel line off the rail, and nothing comes out. Guess what... from sitting for 6+ months while I sorted a new timing belt, the fuel pump has died again! Lol oh well.

Link to comment
Share on other sites

  • 3 weeks later...

After replacing the fuel pump, and injectors the engine is running! Runs alright, a little misfire every now and then, but not to bad. Got to bleed the cooling, as I flushed out all the old. What is normal to see for this cars warmed up operating temperature?

Link to comment
Share on other sites

Ok weird. By pouring in a little oil into the cylinders, and spinning over the engine a ton, I was able to get the engine running just like it was this morning.

Now for a little tweaking.

It runs mostly fine, but it has a bit of trouble idling (shaky engine,inconsistent RPM(sometimes the rpm goes up to 1500-1600 out of nowhere), but does not seem to misfire completely though as I hear consistent puffs out the exhaust(not all puffs sound the same though)). Sometimes this car will die on first start-up, and will take a 2nd try to get it running. Cooling system seems fine, and it seems to idle when its warm at 1000 RPM which seems high.

I may have connected the injector electrical connectors to the wrong injectors (stupid me), but have no real way to tell. What is the firing order of the engine/is there a way to know which connector goes for which injector?

By switching any of the connectors around to different injectors it does not make the engine run any visually or audio-ably better. Its mostly the middle 2 injectors that I may have hooked up incorrectly.

- Thanks, Jayden.

Link to comment
Share on other sites

There is no sequential injection on this engine. The ECU has only two pins for four injectors so even if you swap the wrong injectors it can't be that bad.

You can also check if the HT leads are properly connected to the distributor cap, I had a problem with that just yesterday and the engine actually managed to ran better with the lead completely disconnected. That beign said my car has no lambda, yours probably doesn't react the same way if they are misfires.

 

Link to comment
Share on other sites

So right now my biggest issue is actually compression...

When I go to start the car after its properly cooled down, there is like a 33% chance that at least 1 cylinder will not have compression. Usually it starts out where all 4 cylinders are without compression, and 2 or 3 cylinders will start compressing as the engine spins over, however usually there is a stubborn cylinder that wont compress. So typically i'd just wait until the next day to mess with this car, hoping they magically start compressing again, and sometimes I get lucky the next day with all four compressing.
 

Any idea what in the world could be causing this?

Link to comment
Share on other sites

Did you change the oil and filter? I've had valves sticking on peugeot TU engines, you can hear a miss at idle but it clears up in higher rpm. That usaly happens on engines that have been seeting for years. change the oil and run the engine for prolonged periods the oil need to worm up and pump up the hydraulic lifters, it will get worse before it gets better, but eventually with longer runnings and drives when the engine is under load it will clear up.

Link to comment
Share on other sites

  • 2 weeks later...

The car for past few days has reliably had compression - Thank goodness, HOWEVER....

A problem I have had the entire time with driving this car is, sometimes the car will not rev up - Even in neutral it will not go past 2000 RPM. And it will misfire about half of the cylinders during the time while this problem is occurring. Also just letting the car idle in neutral it will randomly rev itself up to 2000+ RPM, Even does this while driving sometimes.   It sort of seems like when the engine is cold this issue is less likely to occur.

Any ideas of what I should check or a cause?

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

Loading...

×
×
  • Create New...