Forums
New posts
Search forums
Image search
Shop
Amazon Store
T-Shirts
Stickers
Members
Current visitors
Supporting Member Upgrade
Sponsors
About
Log in
Register
Search
Search titles only
By:
Search titles only
By:
New posts
Search forums
Image search
Search
Search titles only
By:
Search titles only
By:
Menu
Install the app
Install
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Forums
Jeep Wrangler YJ
YJ General Discussion
89 4.2 wouldn't start then did
Reply to thread
Message
<blockquote data-quote="deadpool1" data-source="post: 439589" data-attributes="member: 21229"><p>fails to start cold and hot engine? or both?</p><p>seems like you flooded it cranking as is crazy easy to do on CARB engine,.</p><p>spark plug tips dripping fuel is flooded</p><p>the choke., stuck on or too much it will flood. (wet spark plug tips =proof)</p><p>the trick on carbs is not cranking it do death, but to use WOT cranking (100% air) to clear the flood, or even block open the choke plate,.</p><p>WOT- wide open throttle, works on EFI too and says so in the users guide.</p><p></p><p>cranks but will, not start, well be happy it is a hard failure making the diagnosis x10 more easy and for sure <strong>safer</strong>. (than on road stalls)</p><p>good engine, (can not burn fuel on a dead engine) (picture burned up intake valves) tests show vacuum bounces, and compression fails l;ow. 150psi par.</p><p></p><p>the three: gOOD: <strong>engine/spark/ and good fueling</strong> and air too, but the CARB does air.and chokes love to faiL.</p><p>there can be bad fuel, is car found in barn dead,no history told.</p><p></p><p>THERE CAN BE NO <strong>FIRE</strong> IF SPARK IS GONE, SO... THE WORD IS<strong> COMBUSTION. (i can burn (fire) in a gutter.</strong></p><p></p><p></p><p>spark can'T burn fuel lacking spark, ottocycle gas engine's/</p><p></p><p>so spark , google how to test spark 100 years the same way then and now. I use a new test spark plug gaped to 35 thou.</p><p>not a full list, have 50 in mine,</p><p></p><p></p><p>then try test fuel (using maGIC INSTANT START IN A CAN)</p><p></p><p>CONSIDER A TUNE UP? (CAP/ROTOR/WIRE-SETs/ AND SPARK PLUGS GAPED TO SPEC?)</p><p></p><p>4.2: HAS WHAT FUELING, ?89?</p><p>This engine is stuck in <strong><em>CARB land</em></strong> , no real EFI , no TBI , no MPI. no worse! ,an electronic CARB c2BBD.</p><p>so if spark is good ,then try test fuel and did and fails so ... do this.</p><p></p><p></p><p>in the carb air horn of the c2 BBD carb? , air cleaner off, (is air cleaner ,clean and fuel filter? ) both are tune up listed.</p><p>this CARB has computer too and is not fun to work with ever.</p><p></p><p>now block open the choke fly plate on top of air horn, now choke is 100% dead ,and crank NOW.</p><p>I love CARB S, but not electronic ones ever.</p><p>check all fuses?></p><p>make sure the choke works. cranking fails try WOT first. then block open choke.</p><p></p><p>see 1 page here, on BBD carb</p><p>[ATTACH=full]121862[/ATTACH]</p><p></p><p>ever do a full tune up, spark and all filters.?????</p><p>x = stepper motor</p><p>this electric feed back carb C2BBD</p><p>I see many carbs used, this but one.</p><p></p><p>[ATTACH=full]121864[/ATTACH]</p></blockquote><p></p>
[QUOTE="deadpool1, post: 439589, member: 21229"] fails to start cold and hot engine? or both? seems like you flooded it cranking as is crazy easy to do on CARB engine,. spark plug tips dripping fuel is flooded the choke., stuck on or too much it will flood. (wet spark plug tips =proof) the trick on carbs is not cranking it do death, but to use WOT cranking (100% air) to clear the flood, or even block open the choke plate,. WOT- wide open throttle, works on EFI too and says so in the users guide. cranks but will, not start, well be happy it is a hard failure making the diagnosis x10 more easy and for sure [B]safer[/B]. (than on road stalls) good engine, (can not burn fuel on a dead engine) (picture burned up intake valves) tests show vacuum bounces, and compression fails l;ow. 150psi par. the three: gOOD: [B]engine/spark/ and good fueling[/B] and air too, but the CARB does air.and chokes love to faiL. there can be bad fuel, is car found in barn dead,no history told. THERE CAN BE NO [B]FIRE[/B] IF SPARK IS GONE, SO... THE WORD IS[B] COMBUSTION. (i can burn (fire) in a gutter.[/B] spark can'T burn fuel lacking spark, ottocycle gas engine's/ so spark , google how to test spark 100 years the same way then and now. I use a new test spark plug gaped to 35 thou. not a full list, have 50 in mine, then try test fuel (using maGIC INSTANT START IN A CAN) CONSIDER A TUNE UP? (CAP/ROTOR/WIRE-SETs/ AND SPARK PLUGS GAPED TO SPEC?) 4.2: HAS WHAT FUELING, ?89? This engine is stuck in [B][I]CARB land[/I][/B] , no real EFI , no TBI , no MPI. no worse! ,an electronic CARB c2BBD. so if spark is good ,then try test fuel and did and fails so ... do this. in the carb air horn of the c2 BBD carb? , air cleaner off, (is air cleaner ,clean and fuel filter? ) both are tune up listed. this CARB has computer too and is not fun to work with ever. now block open the choke fly plate on top of air horn, now choke is 100% dead ,and crank NOW. I love CARB S, but not electronic ones ever. check all fuses?> make sure the choke works. cranking fails try WOT first. then block open choke. see 1 page here, on BBD carb [ATTACH type="full" alt="fear.JPG"]121862[/ATTACH] ever do a full tune up, spark and all filters.????? x = stepper motor this electric feed back carb C2BBD I see many carbs used, this but one. [ATTACH type="full" alt="fear3.JPG"]121864[/ATTACH] [/QUOTE]
Verification
Post reply
Forums
Jeep Wrangler YJ
YJ General Discussion
89 4.2 wouldn't start then did
Top
Bottom