My car's fuel pump stopped working few weeks ago after 7K km (It's not bad as the pump is Made in China). I purchased a new one (Reccon, comes in a box and red color) in 750 rs and replaced it. Since the pipes were worn out so I also got some rubber pipe from Gawalmandi.
It's working fine, but I don't leave any work unsupervised. Although there wasn't slightest leak, both ends were dry. However, 14 hours later and some 40-50 km running, I noticed the clip was damp. I checked the other (carburetor) end and i t was not different than the pump's nozzle end. I tightened the clamp with screw driver but leakage didn't stop.
Then I took it to the mechanic and he said that the clamp was too tight which caused pipe damaged and minor leakage. This time the "senior" (master Ustaad) cut another piece of (same) rubber pipe and gently tighten the clamp. Result, no leakage at first but same thing happened the next day.
After that, I was thinking there must be something wrong with the pipe since mechanic is a good guy; he replaced radiator hosepipes with rusty nozzles without causing any leakage.
I talked to the pipe vendor, he inspected the pump nozzle and pipe and told me that the pipe was smaller than nozzle and when we fixed it using excessive force, the thread broken which is causing leakage. He gave me another piece of pipe with bigger diameter. I could easily slip it on the nozzle (but not too loose to cause leakage). This time I repeated the procedure (DIY), fix was looking good, no leakage until 12 hours and 25 km trip. Same thing happened again!
Now my mechanic told me that it's bad quality pipe and I should get some with good quality form another shop. Then I told another vendor (in Saddar) the story and he gave me this pipe (blue with yellow line). Repeated the procedure for 3rd time and result was good. However, after 3 days and around 100 km running, seepage came back! But this time it's 50 % less than it was before with the black pipes.
Let me clear few things, first thing I also changed the clamps twice thinking that it could be the result of substandard clamps. Then, the clamps are not under/over tightened and the last thing is, this trouble started after fuel pump replacement, so could this new pump be the culprit?
And what should I do now? If I take it to the auto mechanic, he replaces the pipe and declare it "fit" as there's no leakage even without clamps but the problem begin several hours after replacement.
Someone suggests that I should use thin coat of silicone gel to seal it since the leakage is very small, will it work or just mess the pipe and nozzles?
Thanks very much for reading the post and looking forward to your worthy advice!
