alfizta 6 Report post Posted April 17, 2015 hi all! my 156 is having what I think to be a fuel leak at the fuel pump. the smell is coming from behind the rear seats, at the sky hatch. anyone knows a way to fix the leak without having to buy a new fuel pump? thanks! Quote Share this post Link to post Share on other sites
Smaky 73 Report post Posted April 17, 2015 It's an unlikely diagnosis as the pump is contained within the fuel tank, and the only part of the fuel system outside of the tank and not on the engine is the fuel lines, it's possible one is split which would be a simple replacement, but if it was a pump problem then I could only imaging the top has rotted or the seal is perishing, but if you are getting a petrol smell in the cabin I would suggest you check the exhaust for major leaks. Quote Share this post Link to post Share on other sites
alfizta 6 Report post Posted April 17, 2015 many thanks, Smaky! will update as soon as I have the time... Quote Share this post Link to post Share on other sites
Smaky 73 Report post Posted April 17, 2015 I'll stick with unlikely as nothing is impossible. Quote Share this post Link to post Share on other sites
alfizta 6 Report post Posted April 17, 2015 I hope so, as a new fuel pump is not that cheap. anyway, fearing the worst. any recommended fuel resistant glue? not epoxy, please. by what I searched won't last more than a year. Quote Share this post Link to post Share on other sites
alfizta 6 Report post Posted April 19, 2015 (edited) just couldn't hold myself any longer. got to the High Quality Germany Engineered BOSCH fuel pump and there was a swiming pool of petrol on top. you can see a small crack in the plastic top and fuel coming out from it Edited April 19, 2015 by alfizta Quote Share this post Link to post Share on other sites
Smaky 73 Report post Posted April 19, 2015 OK, like I said it's not the pump but the case, cheapest option is to seal the crack or get a replacement from a scrapper Quote Share this post Link to post Share on other sites
alfizta 6 Report post Posted April 19, 2015 AH, AH, AH! I can get a new boschy crapy one for 130 Euros from the middle east. lets see what the scrap yard or the aftermarket has for me... Quote Share this post Link to post Share on other sites
alfizta 6 Report post Posted April 19, 2015 there are «universal fuel pumps» on ebay. what info you have on that? Quote Share this post Link to post Share on other sites
Smaky 73 Report post Posted April 20, 2015 They wont work, the lid is cracked not the pump. Quote Share this post Link to post Share on other sites
alfizta 6 Report post Posted April 21, 2015 ordered the boschy one. very nice price. will update after the big bang. Quote Share this post Link to post Share on other sites
Smaky 73 Report post Posted April 21, 2015 as long as there are no more planets formed... Quote Share this post Link to post Share on other sites
alfizta 6 Report post Posted May 6, 2015 got the new pump. any tricks to remove the fastening ring more easily? was thinking of spraying some wd40 going to soak my hands on gasoline this weekend... Quote Share this post Link to post Share on other sites
Smaky 73 Report post Posted May 6, 2015 Get the correct tool .... http://www.totallyalfa.com/index.cfm?fuseaction=main.dspProduct&id=5 Quote Share this post Link to post Share on other sites
alfizta 6 Report post Posted May 7, 2015 correct, correct... my ts 146 is running on just 4 spark plugs... Quote Share this post Link to post Share on other sites
alfizta 6 Report post Posted May 7, 2015 just read a bit again about the TS technology. I'll plug the side plugs back again. but can't tell the difference. about the fuel pump, don't feel like buying the tool... Quote Share this post Link to post Share on other sites
Smaky 73 Report post Posted May 7, 2015 If you run a 146 on 4 plugs then 1+2 are on primaries and 3+4 are on secondaries, not really an issue as a lot of the race teams do this, but they are running different ECUs with maps designed for the engine, yours would be confused and running underpower as the second spark is there to increase flow speed of the gases aiding the fluid dynamics of the engine and increasing efficiency. Quote Share this post Link to post Share on other sites
alfizta 6 Report post Posted May 9, 2015 well, won't take off the credit to the alfa romeo engineers... replugged the side spark plugs. about the fuel pump replacement... hammered with the help of a white board marker pen. was easy. some petrol spilled over the seats and the floor... but, SUCCESS!!! fuel pump makes quite sucking noise. I guess that is normal... Quote Share this post Link to post Share on other sites
alfizta 6 Report post Posted May 9, 2015 well, not happy with the noise. I thought that when putting the cover on top again, the sound would go away, but it did not. also, I get a king of humming sound too that is more noticeable from the bottom of the car. although, the car runs perfectly. Quote Share this post Link to post Share on other sites
alfizta 6 Report post Posted May 9, 2015 took her for a drive again. most of the noise was gone for a couple of minutes, then returned again... the back seats fitted take out plenty of the noise, though... Quote Share this post Link to post Share on other sites
Smaky 73 Report post Posted May 9, 2015 Sounds normal. Quote Share this post Link to post Share on other sites
alfizta 6 Report post Posted May 10, 2015 is it possible for air to be trapped inside the pump and being released from time to time? Quote Share this post Link to post Share on other sites
alfizta 6 Report post Posted May 10, 2015 apparently the pump is getting less noisy. my question about the trapped air is because the sound I hear is like liquid being squeezed at high pressure inside a hose, but with bubbles inside. the same noise you hear from a grass irrigation system... probably you are thinking, «that's what is supposed to be heard...». the humming sound is still present, and maybe is just the pump touching the metal cover and resonating all over the chassis... Quote Share this post Link to post Share on other sites
Smaky 73 Report post Posted May 12, 2015 I'm thinking that the motor is just bedding in the brushes, the noise should quieten down, but the humming is normal Quote Share this post Link to post Share on other sites
alfizta 6 Report post Posted May 12, 2015 thank you, Smaky! will update if something significant happens... Quote Share this post Link to post Share on other sites
