CJ8 weber conversion timing/backfire problem
09-17-2003, 02:15 PM
#21
Guest
Posts: n/a
Re: CJ8 weber conversion timing/backfire problem
Other than being loud and startling, does backfiring hurt anything?
Mine backfires occasionally, esp. when the engine is hot and has been
running all day, but it is infrequent enough that I haven't worried
about it.
Mine backfires occasionally, esp. when the engine is hot and has been
running all day, but it is infrequent enough that I haven't worried
about it.
09-17-2003, 05:37 PM
#22
Guest
Posts: n/a
Re: CJ8 weber conversion timing/backfire problem
Just my 2 cents worth on this. My '76 CJ had the original Carter POS carb,
and the even worse Prestolite breakerless ign. I really wanted to keep the
thing stock but after too many months of the cold running stumbles, farts &
backfires from the carb, and endless stalling episodes caused by the
ignition & its bundle-of-snakes wiring, I tossed the entire setup. I
replaced the carb with a Weber 551 kit (installed on a 2 barrel manifold
from a 258) and installed a DUI ignition kit. PRESTO, now the thing runs
like a top, no stalling, better performance & mileage.
"Joshua Nelson" <spam_box@ev1.net> wrote in message
news:b102b6e4.0309171015.eda149e@posting.google.co m...
> Other than being loud and startling, does backfiring hurt anything?
> Mine backfires occasionally, esp. when the engine is hot and has been
> running all day, but it is infrequent enough that I haven't worried
> about it.
and the even worse Prestolite breakerless ign. I really wanted to keep the
thing stock but after too many months of the cold running stumbles, farts &
backfires from the carb, and endless stalling episodes caused by the
ignition & its bundle-of-snakes wiring, I tossed the entire setup. I
replaced the carb with a Weber 551 kit (installed on a 2 barrel manifold
from a 258) and installed a DUI ignition kit. PRESTO, now the thing runs
like a top, no stalling, better performance & mileage.
"Joshua Nelson" <spam_box@ev1.net> wrote in message
news:b102b6e4.0309171015.eda149e@posting.google.co m...
> Other than being loud and startling, does backfiring hurt anything?
> Mine backfires occasionally, esp. when the engine is hot and has been
> running all day, but it is infrequent enough that I haven't worried
> about it.
09-17-2003, 05:37 PM
#23
Guest
Posts: n/a
Re: CJ8 weber conversion timing/backfire problem
Just my 2 cents worth on this. My '76 CJ had the original Carter POS carb,
and the even worse Prestolite breakerless ign. I really wanted to keep the
thing stock but after too many months of the cold running stumbles, farts &
backfires from the carb, and endless stalling episodes caused by the
ignition & its bundle-of-snakes wiring, I tossed the entire setup. I
replaced the carb with a Weber 551 kit (installed on a 2 barrel manifold
from a 258) and installed a DUI ignition kit. PRESTO, now the thing runs
like a top, no stalling, better performance & mileage.
"Joshua Nelson" <spam_box@ev1.net> wrote in message
news:b102b6e4.0309171015.eda149e@posting.google.co m...
> Other than being loud and startling, does backfiring hurt anything?
> Mine backfires occasionally, esp. when the engine is hot and has been
> running all day, but it is infrequent enough that I haven't worried
> about it.
and the even worse Prestolite breakerless ign. I really wanted to keep the
thing stock but after too many months of the cold running stumbles, farts &
backfires from the carb, and endless stalling episodes caused by the
ignition & its bundle-of-snakes wiring, I tossed the entire setup. I
replaced the carb with a Weber 551 kit (installed on a 2 barrel manifold
from a 258) and installed a DUI ignition kit. PRESTO, now the thing runs
like a top, no stalling, better performance & mileage.
"Joshua Nelson" <spam_box@ev1.net> wrote in message
news:b102b6e4.0309171015.eda149e@posting.google.co m...
> Other than being loud and startling, does backfiring hurt anything?
> Mine backfires occasionally, esp. when the engine is hot and has been
> running all day, but it is infrequent enough that I haven't worried
> about it.
09-17-2003, 11:14 PM
#24
Guest
Posts: n/a
Re: CJ8 weber conversion timing/backfire problem
Joshua Nelson wrote:
> Other than being loud and startling, does backfiring hurt anything?
> Mine backfires occasionally, esp. when the engine is hot and has been
> running all day, but it is infrequent enough that I haven't worried
> about it.
What kind of "sabbatical" do you call that? Why are you still trolling here?
> Other than being loud and startling, does backfiring hurt anything?
> Mine backfires occasionally, esp. when the engine is hot and has been
> running all day, but it is infrequent enough that I haven't worried
> about it.
What kind of "sabbatical" do you call that? Why are you still trolling here?
09-17-2003, 11:14 PM
#25
Guest
Posts: n/a
Re: CJ8 weber conversion timing/backfire problem
Joshua Nelson wrote:
> Other than being loud and startling, does backfiring hurt anything?
> Mine backfires occasionally, esp. when the engine is hot and has been
> running all day, but it is infrequent enough that I haven't worried
> about it.
What kind of "sabbatical" do you call that? Why are you still trolling here?
> Other than being loud and startling, does backfiring hurt anything?
> Mine backfires occasionally, esp. when the engine is hot and has been
> running all day, but it is infrequent enough that I haven't worried
> about it.
What kind of "sabbatical" do you call that? Why are you still trolling here?
09-18-2003, 02:48 AM
#26
Guest
Posts: n/a
Re: CJ8 weber conversion timing/backfire problem
Mixture too lean / too rich / throttle cable adjusted incorrectly.
If you tell us when it happens more precisely, should be able to narrow it
down for you. (e.g. at idle / when accelerating / when lifting off )
Worst case scenario - backfiring can set fire to your engine bay (blow back
in the carb), blow your exhaust apart or even crack piston rings. You want
to fix it.
Dave.
Joshua Nelson wrote:
> Other than being loud and startling, does backfiring hurt anything?
> Mine backfires occasionally, esp. when the engine is hot and has been
> running all day, but it is infrequent enough that I haven't worried
> about it.
If you tell us when it happens more precisely, should be able to narrow it
down for you. (e.g. at idle / when accelerating / when lifting off )
Worst case scenario - backfiring can set fire to your engine bay (blow back
in the carb), blow your exhaust apart or even crack piston rings. You want
to fix it.
Dave.
Joshua Nelson wrote:
> Other than being loud and startling, does backfiring hurt anything?
> Mine backfires occasionally, esp. when the engine is hot and has been
> running all day, but it is infrequent enough that I haven't worried
> about it.
09-18-2003, 02:48 AM
#27
Guest
Posts: n/a
Re: CJ8 weber conversion timing/backfire problem
Mixture too lean / too rich / throttle cable adjusted incorrectly.
If you tell us when it happens more precisely, should be able to narrow it
down for you. (e.g. at idle / when accelerating / when lifting off )
Worst case scenario - backfiring can set fire to your engine bay (blow back
in the carb), blow your exhaust apart or even crack piston rings. You want
to fix it.
Dave.
Joshua Nelson wrote:
> Other than being loud and startling, does backfiring hurt anything?
> Mine backfires occasionally, esp. when the engine is hot and has been
> running all day, but it is infrequent enough that I haven't worried
> about it.
If you tell us when it happens more precisely, should be able to narrow it
down for you. (e.g. at idle / when accelerating / when lifting off )
Worst case scenario - backfiring can set fire to your engine bay (blow back
in the carb), blow your exhaust apart or even crack piston rings. You want
to fix it.
Dave.
Joshua Nelson wrote:
> Other than being loud and startling, does backfiring hurt anything?
> Mine backfires occasionally, esp. when the engine is hot and has been
> running all day, but it is infrequent enough that I haven't worried
> about it.
09-18-2003, 10:04 AM
#28
Guest
Posts: n/a
Re: CJ8 weber conversion timing/backfire problem
Cal Wheeler <cal@whee.ler> wrote in message news:<bkb7uo$6o9$2@pita.alt.net>...
>
> What kind of "sabbatical" do you call that?
I thought several days off, including a weekend, would be long enough
to get you to calm down and act like an adult. Alas, apparently not.
Back to the killfile you go!
>
> What kind of "sabbatical" do you call that?
I thought several days off, including a weekend, would be long enough
to get you to calm down and act like an adult. Alas, apparently not.
Back to the killfile you go!
09-18-2003, 10:04 AM
#29
Guest
Posts: n/a
Re: CJ8 weber conversion timing/backfire problem
Cal Wheeler <cal@whee.ler> wrote in message news:<bkb7uo$6o9$2@pita.alt.net>...
>
> What kind of "sabbatical" do you call that?
I thought several days off, including a weekend, would be long enough
to get you to calm down and act like an adult. Alas, apparently not.
Back to the killfile you go!
>
> What kind of "sabbatical" do you call that?
I thought several days off, including a weekend, would be long enough
to get you to calm down and act like an adult. Alas, apparently not.
Back to the killfile you go!
09-18-2003, 10:09 AM
#30
Guest
Posts: n/a
Re: CJ8 weber conversion timing/backfire problem
"Dave Milne" wrotE:
> If you tell us when it happens more precisely, should be able to narrow it
> down for you. (e.g. at idle / when accelerating / when lifting off )
Under heavy acceleration at higher RPMs when the engine is hot. e.g.,
I have been driving on the freeway in hot weather for an hour and pull
off to an exit ramp and sit at a stop light. The light turns green, I
hit the gas hard to get back up to speed quickly, and I let it rev
fairly high in gear before up-shifting (so that I can accelerate more
quickly.) This is typically the point at which I hear a backfire.
> Worst case scenario - backfiring can set fire to your engine bay (blow back
> in the carb), blow your exhaust apart or even crack piston rings. You want
> to fix it.
Ouch, no kidding. If I drive it like granny (no quick
acceleration/high RPMs) I seem to avoid backfiring so I can do that
until I figure out the bigger problem... but that's just not a fun
way to drive. :-)
> If you tell us when it happens more precisely, should be able to narrow it
> down for you. (e.g. at idle / when accelerating / when lifting off )
Under heavy acceleration at higher RPMs when the engine is hot. e.g.,
I have been driving on the freeway in hot weather for an hour and pull
off to an exit ramp and sit at a stop light. The light turns green, I
hit the gas hard to get back up to speed quickly, and I let it rev
fairly high in gear before up-shifting (so that I can accelerate more
quickly.) This is typically the point at which I hear a backfire.
> Worst case scenario - backfiring can set fire to your engine bay (blow back
> in the carb), blow your exhaust apart or even crack piston rings. You want
> to fix it.
Ouch, no kidding. If I drive it like granny (no quick
acceleration/high RPMs) I seem to avoid backfiring so I can do that
until I figure out the bigger problem... but that's just not a fun
way to drive. :-)
