Mi16 Not Starting After Fuel Line Change

[iffikas 1]

Hey.

 

I have a 205 from 88 which has mi16 engine.

 

Car has sat in garage for almost 6 months without starting. So I went to garage, charged battery full again and started the car with second try. No worries, all good and I was happy, then I noticed that fuel hose coming out of injection was leaking. So I went shopping bought few meters (suspected that probably other lines were tired also, I was correct), substituted the one that was leaking + the one from filter to rail + the ones coming from tank to rail.

 

Everything set up, I was hoping it starts from first crank, but instead it promised for 2 seconds and then empty crank. Tried a few more times, achieved one bang and nothing else. I hear that pump is working and there's pressure in lines. But When listening closely under the hood, it sounds like there's whissing noise near fuel rail. My guess is that there's somehow air in the system.

 

Searched the forums and found that should close feeding line and build pressure and start after that - no good. Tried closing air intake, cranked few times removed blockage from air intake, it almost started but still no luck. One topic suggested that might try this "engine start spray" - I will try this next week.

 

Do you guys have any recommendations?

 

Cheers,

 

Ivar

Edited March 19, 2017 by iffikas

[iffikas 1]

Hey,

 

If I squeeze line shut, then I hear thar pump sound changes, therefoere I believe that fuel is circulating fine. I will re-check tommorow.

[jackherer 543]

The only thing you can really get wrong with the fuel lines is mixing the supply and return up so if you're sure you haven't done that it is probably unrelated, maybe you disturbed some wiring or something while changing the hoses?

[iffikas 1]

Okay, filled the tank half full, checked fuel lines, I hadn't mixed them up. Also there's no clogging.

In addition checked wiring that I was close to and seems to be as it's supposed to be.

But the behavior is still the same, it almost starts up, then immediately dies.

 

I will have more time on Thursday to check, but I am running out of ideas actually.

What sensors could produce this kind of behavior? Probably have to check earths everywhere also.

[steve@cornwall 100]

I'd try starting once, cranking for a reasonable time. Then pull the fuel pump fuse and try again.if it fires for a short run you'll know the problem is overfuelling

[xy8 4]

"it sounds like there's whissing noise near fuel rail."

 

 

Broken fuel pressure regulator? Check vacuum connection , maybe there is fuel.

[iffikas 1]

@steve@cornwall

 

Okay, will test.

If it turns out to be overfueling, then I should check ECU temp sensor, coolant temp sensor - something else?

 

@xy8

 

I actually checked it yesterday, even changed the vacuum hose, because it had cracks (not through).

If overfueling then it would be normal for it to whiz I guess.

 

Will see what tomorrow brings.

Edited March 22, 2017 by iffikas

[steve@cornwall 100]

Would certainly check the wiring to any sensors. Just really a process of elimination. It's something that could replicate what you are getting and can be done without changing anything else.

[pug_ham 244 3 Cars]

Did you prime the fuel lines back to the engine after replacing them?

 

If you've basically left an empty fuel line after replacing them, it has probably fired on the remaining fuel in the pipes & fuel rail you didn't disturb so it's now got no fuel in to fire from.

 

I usually put a separate 12v feed to the pump so it runs for a good 30 seconds to pump fuel right round the fuel lines after splitting any part of the fuel system, especially if you managed to empty the fuel filter.

 

g

[Putte205 4]

Just remove the fuel rail with injectors, and run the starter. If they spray fuel, new lines are fine. Even if its over fueling it should start. did you check you have spark?

[Mark A82 0]

I fixed the exact same thing last weekend. I found out petrol doesn't like traveling a long distance

 

You're going to need a separate 12v supply to the pump and which you can switch on and off yourself and your going to have separate each joint on the flow one by one until your getting petrol at each point but if its going to work that way it'll be immediate

I fixed the exact same thing last weekend. I found out petrol doesn't like traveling a long distance

 

You're going to need a separate 12v supply to the pump and which you can switch on and off yourself and your going to have separate each joint on the flow one by one until your getting petrol at each point but if its going to work that way it'll be immediate

[welshpug 1,657]

you shouldn't need to do that, sounds like your pump is in its last legs.

[iffikas 1]

Evening!

So got to garage today. And checked all the things recommended.

Fuel lines are good and problem can't be priming. Injectors are squirting normally.

All sensors are all in place, nothing loose.

 

What still seems off, is that FPR makes hissing noise, I don't recall it doing that never before.

I checked the vacuum hose, no fuel there. Can FPR break like this? Current FPR is Bosch 0280160258

 

I am welcome to ideas and recommendations.

[welshpug 1,657]

fpr making noise is normal, that's the fuel flowing through it back to the tank.

 

 

have you checked for a good spark? probably a good idea to fit new plugs.

[iffikas 1]

fpr making noise is normal, that's the fuel flowing through it back to the tank.

 

 

have you checked for a good spark? probably a good idea to fit new plugs.

 

Spark was there, but the plugs didn't look that good. Put in order for new plugs yesterday night.

 

Will keep posted.

Thanks!

Edited March 29, 2017 by iffikas

[xy8 4]

My 205 also refused to start couple of times , it was ignition amp to blame every time. Now I have 3 ign. amps installed just in case.

[iffikas 1]

So, went to garage today, yay!

 

Tried with another ignition amp and old plugs. Started and was running little rough. Changed to old ignition amp and it didn't start.

Changed the sparkplugs (Laser Platinum NGK 4642) and tried with newer ignition amp. Started and was running good.

So I thought what the hell and changed back to old ignition amp. Started and was running good.

 

In conclusion, it seems that old sparkplugs were to blame, though they had spark and didn't look too bad.

 

Big up to everyone who contributed with ideas.

 

Cheers!