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| | | Gas tank clunk | Joined: Sep 2019 Posts: 42 newbie | OP newbie Joined: Sep 2019 Posts: 42 | 1985 dodge b150. Gas tank clunking with or without gas cap on. This occurs when the engine is off, parked.
Also, engine is missing and sputtering upon acceleration. I have ruled out accelerator pump and improper timing. Any ideas? Thank you!!! | | | Re: Gas tank clunk | Joined: May 2018 Posts: 2,397 Likes: 64 veteran | veteran Joined: May 2018 Posts: 2,397 Likes: 64 | Is your tank return plugged?. Sure sounds like it, does it take a long time put fuel in the tank?
When in doubt..get the sawzall out..
| | | Re: Gas tank clunk | Joined: Sep 2019 Posts: 42 newbie | OP newbie Joined: Sep 2019 Posts: 42 | Maybe. Wouldn't loosening the gas cap cause knocking to cease? Tank fills quickly.
It's a new remanufactured holley 2280. Since I'm in Denver I'm wondering if I need to considers jets. Hm. | | | Re: Gas tank clunk | Joined: Feb 2016 Posts: 1,266 Likes: 43 old hand | old hand Joined: Feb 2016 Posts: 1,266 Likes: 43 | Are your tank straps loose? Loose fuel sending unit inside the tank?
1987 B250 - Painkiller
| | | Re: Gas tank clunk | Joined: May 2018 Posts: 2,397 Likes: 64 veteran | veteran Joined: May 2018 Posts: 2,397 Likes: 64 | Higher altitude..yes should go up 2 sizes from stock, that should eliminate stumble.
When in doubt..get the sawzall out..
| | | Re: Gas tank clunk | Joined: Feb 2016 Posts: 1,266 Likes: 43 old hand | old hand Joined: Feb 2016 Posts: 1,266 Likes: 43 | If you have access to a vacuum gauge, it will help you tune it.
1987 B250 - Painkiller
| | | Re: Gas tank clunk | Joined: Sep 2019 Posts: 42 newbie | OP newbie Joined: Sep 2019 Posts: 42 | OK, any ideas where I can get jets for a 2280? | | | Re: Gas tank clunk | Joined: Feb 2016 Posts: 1,266 Likes: 43 old hand | old hand Joined: Feb 2016 Posts: 1,266 Likes: 43 | What do your plugs look like? Before I buy anything, I’d check those. You can tell a lot from them and might be able to get away with adjusting you air/fuel mixture screw first. Maybe post a picture of what they look like.
1987 B250 - Painkiller
| | | Re: Gas tank clunk | Joined: Sep 2019 Posts: 42 newbie | OP newbie Joined: Sep 2019 Posts: 42 | I've had my timing set from everywhere between 15 and 35. Advancing the timing does help this problem but doesn't resolve it. I've set the mixture screws to highest vacuum. | | |
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