I would install a "day" tank to rule out the fiberglass tanks.
In addition you can rig a polishing system with a see through filter/bottle to circulate that fuel and see if there's anything obvious in it.
You MUST be sure of a clean fuel supply before proceeding.
Welcome to the Hatteras Owners Forum & Gallery. Sign Up or Login
+ Reply to Thread
Results 11 to 20 of 21
-
08-05-2020 05:56 PM #11
Re: !!PLEASE HELP!! Ford 427 engine problem
Last edited by oscarvan; 08-05-2020 at 06:06 PM.
1978 53' Motor Yacht "LADY KAY V"
Hull number 524
Chesapeake Bay
-
08-05-2020 07:38 PM #12
Re: !!PLEASE HELP!! Ford 427 engine problem
you won't see dissolved fiberglass resins in gasoline.........Pat
-
08-05-2020 08:09 PM #13
-
Re: !!PLEASE HELP!! Ford 427 engine problem
Yep, tanks gueing up.
Bertram had the same problem.Last edited by Captain Ralph; 08-05-2020 at 08:30 PM.
-
-
Re: !!PLEASE HELP!! Ford 427 engine problem
-
Re: !!PLEASE HELP!! Ford 427 engine problem
if you put ethanol gas in your fiberglass tanks, that is your problem. the ethanol is dissolving the resin
which bypassed the filters and starts solidifying in the carb and downstream.
when you turn the engine off it turns to like a tar substance on the valves.
when you start the engines you will bend the pushrods.
why 1 tank and not the other? give it time and it will be both. its not if, but when.
the symptoms will appear. how long depends on how the inside of the tank was laid up and what kind of voids there are.
the tank is baffled, so a bladder is not the answer.
replacement with aluminum is the answer unless you can find someone to make ethanol resistant resin tanks.
this was not an option to me 14 years ago when i went thru it.
you could also try and pump the tanks and only use non ethanol fuel if its available near you.
this solution is entirely based on your comfort level of how far the tanks have dissolved.
if you will continue to use ethanol fuel you will need:
1- aluminum tanks
2- replace all rubber fuel hose with ethanol rate hose
3- pull both carbs and rebuild because you will find it in there too
4- id pull all heads again and free up the valves, carb spray or brake cleaner works for this too.
the reason i say pull the heads again, which i know you dont want to hear after wrestling with that intake manifold,
is the tops of the pistons will have it along with it starting to form a ring around the cylinder hole opening.
think of it like gorilla glue in a combustion chamber
5- as someone stated, these are solid lifter engines. when you have the heads off pull all the lifters
and make sure the pushrods didnt damage the top and the cam didnt mar the bottom.
thats about all i can remember off the top, from my ordeal.
good luck and if you have any more questions ask awayLast edited by UNIQUE_NAME; 08-06-2020 at 02:54 PM. Reason: pistons
Jim
SALTY
1973 38' AFT CABIN
-
08-13-2020 02:58 PM #18Registered Member
- Join Date
- Mar 2019
- Posts
- 4
Re: !!PLEASE HELP!! Ford 427 engine problem
Thanks this is really helpful as well as very painful! I guess the only other question is how do I replace the tanks? Do I have to cut my deck open to pull them out? Also, if I drain the fuel that’s in there now and put ethanol-free tanks, would it stop the resin from desolving any further? I’ve wrestled with all those manifolds and risers once. My lower back was done for 3 months...not really interested in doing it again...lol
-
08-13-2020 06:43 PM #19
Re: !!PLEASE HELP!! Ford 427 engine problem
No, replacing the fuel will not make the problem go away. Don't know what your tanks look like but making small pieces out of them to remove and then installing multiple smaller tanks that fit through the door is a common solution. Cutting holes in boats can have bad side effects and is $$$$.
1978 53' Motor Yacht "LADY KAY V"
Hull number 524
Chesapeake Bay
-
08-13-2020 07:37 PM #20
Re: !!PLEASE HELP!! Ford 427 engine problem
You can cut the deck out to access the tanks. Remove and replace with tested aluminum tanks that are treated for saltwater exposure. Make sure the inside is absolutely dry and stays that way or corrosion will kill it.
Do not do a bunch of little tanks. Do not think its ok to use the tanks after the ethanol.Scott
41C117 "Hattatude"
Port Canaveral Florida.
Marine Electronics and Electrical Products Distributor.