{"id":2550,"date":"2023-11-13T23:00:23","date_gmt":"2023-11-13T22:00:23","guid":{"rendered":"https:\/\/mbci.mackuz.ovh\/?p=2550"},"modified":"2023-11-13T23:00:23","modified_gmt":"2023-11-13T22:00:23","slug":"checking-float-chamber-external-venting-system","status":"publish","type":"post","link":"https:\/\/mbci.mackuz.ovh\/index.php\/2023\/11\/13\/checking-float-chamber-external-venting-system\/","title":{"rendered":"Checking float chamber external venting system"},"content":{"rendered":"

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07.2\u2014182 Checking float chamber external venting system<\/strong><\/div>\n<\/div>\n<\/td>\n
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Special tool<\/strong><\/div>\n<\/div>\n<\/td>\n
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Clamp<\/div>\n<\/div>\n<\/td>\n
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000 589 40 37 00<\/div>\n<\/div>\n<\/td>\n
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Conventional tool<\/strong><\/div>\n<\/div>\n<\/td>\n
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Vacuum tester<\/div>\n<\/div>\n<\/td>\n
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The float chamber external venting system influences hot start characteristics, fuel consumption, bypass character\u00adistics stage I and II and driving performance under full load. If the float chamber external venting system is defec\u00adtive, the fuel level in float chamber will be exposed to atmospheric air pressure, the fuel in mixing tubes will rise to an inadmissible level and the engine will be supplied with excessively rich fuel. High fuel consumption and driving faults will result.<\/div>\n<\/div>\n<\/td>\n
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A. \u00a91974 California<\/div>\n<\/div>\n<\/td>\n
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Function diagram<\/strong><\/div>\n
Float chamber ventilation and fuel<\/strong><\/div>\n
evaporation control system<\/strong><\/div>\n<\/div>\n<\/td>\n
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1\u00a0 \u00a0 Carburetor<\/div>\n
12\u00a0 \u00a0 Electric switchover valve for EGR<\/div>\n
31\u00a0 \u00a0 EGR valve<\/div>\n
34\u00a0 \u00a0 Vacuum connection on intake pipe<\/div>\n
35\u00a0 \u00a0 Check valve<\/div>\n
36\u00a0 \u00a0 Vacuum supply tank<\/div>\n
37\u00a0 \u00a0 Electric switchover valve for float chamber ventilation<\/div>\n
38\u00a0 \u00a0 Draw-off valve<\/div>\n
39\u00a0 \u00a0 Charcoal canister<\/div>\n
b Negative tank vent connection c Air conditioner connection A Vacuum switch connection (EGR) B Draw-off valve connection C Decel diverter valve connection, fuel return valve, ignition switchover and vacuum governor<\/div>\n
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TO73-8853<\/strong><\/div>\n<\/div>\n<\/td>\n
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07.2.2 la\u2014182\/1<\/div>\n<\/div>\n<\/td>\n
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Test conditions:<\/div>\n<\/div>\n<\/td>\n
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All electric fuses in order. Engine at operating temperature. Sealing at vacuum end of controls for EGR and air conditioner, as well as their operation in order.<\/div>\n<\/div>\n<\/td>\n
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Test scope<\/div>\n<\/div>\n<\/td>\n
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Connect vacuum tester. Run engine at idle, a vacuum should be indicated.<\/div>\n<\/div>\n<\/td>\n
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Vacuum in order.<\/div>\n<\/div>\n<\/td>\n
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No vacuum.<\/div>\n<\/div>\n<\/td>\n
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1\u00a0 \u00a0 Check connecting pipe and diaphragm for leaks. For this purpose, pinch vacuum hose at vent valve. If vacuum is now avail\u00adable, attach connecting pipe by glueing with Omnifit or renew diaphragm, respec\u00adtively.<\/div>\n
2\u00a0 \u00a0Check all vacuum hoses up to intake pipe for correct layout, condition and tight seat and recondition, if required.<\/div>\n
3\u00a0 \u00a0Check electric switchover valve (37). For this purpose, switch ignition on and off. The operating noise should now be heard or felt. If not, check whether with the ignition switched on the plug is ener\u00adgized and connected to ground. Renew fuse or establish ground connection, as required. If everything is in order and the switchover valve is nevertheless not yet switching, renew valve since a mechanical defect is indicated.<\/div>\n<\/div>\n<\/td>\n
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07.2.2 la-182\/2<\/div>\n<\/div>\n<\/td>\n
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107-9048<\/div>\n<\/div>\n<\/div>\n<\/td>\n
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B. \u00a91975\/76, (D1976<\/div>\n<\/div>\n<\/td>\n
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Test conditions:<\/div>\n<\/div>\n<\/td>\n
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All electric fuses in order. Engine at operating temperature. Sealing at vacuum end of decel diverter valve (41) and switchover valve (33), as well as their function in order.<\/div>\n<\/div>\n<\/td>\n
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Connect vacuum tester. Run engine at idle speed, vacuum should be indicated.<\/div>\n<\/div>\n<\/td>\n
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Vacuum in order.<\/div>\n<\/div>\n<\/td>\n
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No vacuum.<\/div>\n<\/div>\n<\/td>\n
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07.2.2 la\u2014<\/strong>182\/4<\/div>\n<\/div>\n<\/td>\n
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1.\u00a0 Check connecting pipe and diaphragm for leaks. For this purpose, pinch vacuum hose at vent valve. If vacuum is now available, attach connecting pipe, glue in with Omnifit or renew diaphragm, as required.<\/div>\n
2.\u00a0 Check all vacuum hoses up to vacuum governor for correct layout, condition and tight seat and recondition, if required.<\/div>\n<\/div>\n<\/td>\n
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3. Check electric switchover valve (37). For this purpose, switch ignition on and off, the operating noise should now be heard or felt. If not, check whether with the ignition switched on the plug is energized and connect\u00aded to ground. Renew fuse, if required or establish ground connection. If everything is in order and the switch\u00adover valve is nevertheless not switching, renew valve since a mechanical defect is indicated.<\/div>\n<\/div>\n<\/td>\n
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M7-0004CJU<\/div>\n<\/div>\n
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107-10044<\/div>\n<\/div>\n<\/div>\n<\/td>\n
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07.2.2 la-182\/5<\/div>\n<\/div>\n<\/td>\n
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07.2.2 la-182\/6<\/div>\n<\/div>\n<\/td>\n
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07.2.2 la-182\/7<\/div>\n<\/div>\n<\/td>\n
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    07.2\u2014182 Checking float chamber external venting system   Special tool   Clamp 000 589 40 37 00   Conventional tool   Vacuum tester   Note   The float chamber external venting system influences hot start characteristics, fuel consumption, bypass character\u00adistics stage I and II and driving performance under full load. If the float chamber external venting system is defec\u00adtive, the fuel level in float chamber will be exposed to atmospheric air pressure, the fuel in mixing tubes will rise to an inadmissible level and the engine will be supplied with excessively rich fuel. High fuel consumption and driving faults will result.   A. \u00a91974 California   Function diagram Float chamber ventilation and fuel evaporation control system 1\u00a0 \u00a0 Carburetor 12\u00a0 \u00a0 Electric switchover valve for EGR 31\u00a0 \u00a0 EGR valve 34\u00a0 \u00a0 Vacuum connection on intake pipe 35\u00a0 \u00a0 Check valve 36\u00a0 \u00a0 Vacuum supply tank 37\u00a0 \u00a0 Electric switchover valve for float chamber ventilation 38\u00a0 \u00a0 Draw-off valve 39\u00a0 \u00a0 Charcoal canister b Negative tank vent connection c Air conditioner connection A Vacuum switch connection (EGR) B Draw-off valve connection C Decel diverter valve connection, fuel return valve, ignition switchover and vacuum governor Line color br = brown gr = grey ws = white   TO73-8853   07.2.2 la\u2014182\/1       Test conditions: All electric fuses in order. Engine at operating temperature. Sealing at vacuum end of controls for EGR and air conditioner, as well as their operation in order.   Test scope Connect vacuum tester. Run engine at idle, a vacuum should be indicated. Vacuum in order. No vacuum.   1\u00a0 \u00a0 Check connecting pipe and diaphragm for leaks. For this purpose, pinch vacuum hose at vent valve. If vacuum is now avail\u00adable, attach connecting pipe by glueing with Omnifit or renew diaphragm, respec\u00adtively. 2\u00a0 \u00a0Check all vacuum hoses up to intake pipe for correct layout, condition and tight seat and recondition, if required. 3\u00a0 \u00a0Check electric switchover valve (37). For this purpose, switch ignition on and off. The operating noise should now be heard or felt. If not, check whether with the ignition switched on the plug is ener\u00adgized and connected to ground. Renew fuse or establish ground connection, as required. If everything is in order and the switchover valve is nevertheless not yet switching, renew valve since a mechanical defect is indicated.     07.2.2 la-182\/2       107-9048       B. \u00a91975\/76, (D1976     Test conditions: All electric fuses in order. Engine at operating temperature. Sealing at vacuum end of decel diverter valve (41) and switchover valve (33), as well as their function in order.   Connect vacuum tester. Run engine at idle speed, vacuum should be indicated. Vacuum in order. No vacuum. i   07.2.2 la\u2014182\/4       1.\u00a0 Check connecting pipe and diaphragm for leaks. For this purpose, pinch vacuum hose at vent valve. If vacuum is now available, attach connecting pipe, glue in with Omnifit or renew diaphragm, as required. 2.\u00a0 Check all vacuum hoses up to vacuum governor for correct layout, condition and tight seat and recondition, if required.   3. Check electric switchover valve (37). For this purpose, switch ignition on and off, the operating noise should now be heard or felt. If not, check whether with the ignition switched on the plug is energized and connect\u00aded to ground. Renew fuse, if required or establish ground connection. If everything is in order and the switch\u00adover valve is nevertheless not switching, renew valve since a mechanical defect is indicated. M7-0004CJU iv.   107-10044   07.2.2 la-182\/5       07.2.2 la-182\/6         07.2.2 la-182\/7        <\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_crdt_document":"","footnotes":""},"categories":[32,27],"tags":[],"class_list":["post-2550","post","type-post","status-publish","format-standard","hentry","category-carburetor-fuel-pump-throttle-linkage","category-m110"],"aioseo_notices":[],"featured_image_src":null,"author_info":{"display_name":"mackuz","author_link":"https:\/\/mbci.mackuz.ovh\/index.php\/author\/mackuz\/"},"_links":{"self":[{"href":"https:\/\/mbci.mackuz.ovh\/index.php\/wp-json\/wp\/v2\/posts\/2550","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/mbci.mackuz.ovh\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/mbci.mackuz.ovh\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/mbci.mackuz.ovh\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/mbci.mackuz.ovh\/index.php\/wp-json\/wp\/v2\/comments?post=2550"}],"version-history":[{"count":1,"href":"https:\/\/mbci.mackuz.ovh\/index.php\/wp-json\/wp\/v2\/posts\/2550\/revisions"}],"predecessor-version":[{"id":2551,"href":"https:\/\/mbci.mackuz.ovh\/index.php\/wp-json\/wp\/v2\/posts\/2550\/revisions\/2551"}],"wp:attachment":[{"href":"https:\/\/mbci.mackuz.ovh\/index.php\/wp-json\/wp\/v2\/media?parent=2550"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/mbci.mackuz.ovh\/index.php\/wp-json\/wp\/v2\/categories?post=2550"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/mbci.mackuz.ovh\/index.php\/wp-json\/wp\/v2\/tags?post=2550"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}