Mazda Rotary Club

Cars by Model Type => 3rd generation RX-7's => Topic started by: flatty on November 11, 2006, 10:28:40 PM

Title: i can smell fuel- which cant be a good thing!
Post by: flatty on November 11, 2006, 10:28:40 PM
while driving, as the car comes onto boost, as i open the throttle a bit more i can here what sounds like a boost hose leaking , Tttssshhhh, but im not loosing any pressure , and as i ease of i get a strong smell of fuel!!

any ideas of any common places/ faults to start lookin at? prob the fuel pressure reg??

any help would be great, il have a propper look in the mornin.
cheers
mike
Title: i can smell fuel- which cant be a good thing!
Post by: Grizzly on November 12, 2006, 01:14:42 AM
The Pulsation Damper on the End of the Fuel rail would be my First place to look.

If you have had a rebuild or work done in that area it does\'nt take much to start it leaking.
Title: i can smell fuel- which cant be a good thing!
Post by: flatty on November 12, 2006, 09:43:52 AM
just been doin a bit of researchin/thinkin, and remembered that i had to change the brake servo hose that goes to the inlet manifold, didnt realise it had a 1 way check valve inside it and replaced it with a normal bit of hose!!!wasnt realy thinkin at the time, was worryin if the engine wud start after rebuild!lol

a couple of people have said in the past on here that this would course a fuel smell inside the car, and  i guess the Tttshhh sound could be the air being forced into the servo!

i have the UIM off at the moe and can see no leaks???
Title: i can smell fuel- which cant be a good thing!
Post by: Grizzly on November 12, 2006, 10:15:17 AM
Have you driven it yet? If the one way valve is missing/wrong way round it will be an Experiance if you get it on Boost then try to brake :yes

I did that once and your right about it possably causing the Fuel smell (mine did) but the biggest thing is the Power assist don\'t work when you are giving it a bit then try to Brake (its a great feeling when you think your Brakes don\'t work)
Title: i can smell fuel- which cant be a good thing!
Post by: flatty on November 12, 2006, 10:16:53 AM
well i did think the brakes didnt seem that great last nite!!!! good job im runninig it in or it could of been a bit dangerous!!!!
Title: i can smell fuel- which cant be a good thing!
Post by: flatty on November 12, 2006, 10:18:10 AM
did u get a Ttsshhhhh sound though when it came on boost?? i spose it is possible as its tryin to force air into the servo?
Title: i can smell fuel- which cant be a good thing!
Post by: Grizzly on November 12, 2006, 10:25:24 AM
TBH i can\'t say i did?

The only thing i can say is put it back in and try it. I know putting Boost into a Servo does\'nt do it any good.
Title: i can smell fuel- which cant be a good thing!
Post by: flatty on November 16, 2006, 03:16:02 PM
the upper inlet manifold gasket was leaking, so put this back on with RTV silicone and put the  original servo to manifold hose back on and its fine now!!