4 replies to this topic

[themilkguy]

Hi all,

Driving home from work (in a blizzard of course, nothing ever happens in fair weather) at about 100kph and I started losing power when climbing hills. Once I levelled off the power would come back eventually, but there was much stumbling and loss of speed.

At the end, I could keep her running with a 1/2 notch of choke.

Popped the hood when I got home (in the dark) and there was no broken fuel line or obvious loss of fuel. The back of the carb looked shiny, but it was hard to tell with the filter in the way.

Vacuum line? Fuel filter? It started up without issue the next morning.

Advice appreciated. I'm suspicious of the 27yo fuel lines under the hood, can they let air in without letting fuel out?

Cheers and Merry Christmas!


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[niccer]

I'm a new to these cars and also carburetors, but feel like I should chime in. 

 

I have an '86 DX, which I assume is what you're driving, although I don't have a manual choke that I know of.  The fuel line enters my carb on the right side (towards the rear) and would be pretty evident if it was leaking.  I don't think it's possible for you to suck air into your fuel line without any gas coming out, as it maintains positive pressure. 

 

I am having serious bogging issues under full throttle and think it's probably a clogged fuel filter and/or a clogged cat.  Fuel filters for our cars are cheap and if you haven't changed them before, after 27 years, it's probably a good time to do so. 

[themilkguy]

Thanks Niccer. I should have specified DX vs. HF. Also, my car is CDM, so perhaps that's where the manual choke comes in to play?

Crawled around under her and the rear fuel filter looks like it came off the ark. Hard to gauge age, but for the price it's definitely worth replacing.

Cheers

[niccer]

There's a guy that started a thread just a few down from yours that was experiencing the same problem (as well as a host of others) and the fuel filter seemed to fix him up.  Hope it's the same for me; I'll probably get around to doing both of mine this weekend. 

 

Let us know if that solves the issue. 

[themilkguy]

I am starting to wonder if it was carburetor ice. I noticed a dramatic shift in my gas consumption on the way home that night, and the car's been fine ever since.

Oh well, she'll be in the garage soon for some attention over the winter.


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