{"id":51073,"date":"2017-03-11T11:21:21","date_gmt":"2017-03-11T16:21:21","guid":{"rendered":"http:\/\/www.freeautomechanic.com\/mechanic\/forum\/?p=51073"},"modified":"2017-03-11T11:21:21","modified_gmt":"2017-03-11T16:21:21","slug":"4-things-an-engine-needs-in-order-to-run","status":"publish","type":"post","link":"https:\/\/www.freeautomechanic.com\/mechanic\/forum\/2017\/03\/4-things-an-engine-needs-in-order-to-run","title":{"rendered":"4 Things an Engine Needs in order to Run"},"content":{"rendered":"<p><img decoding=\"async\" class=\"aligncenter size-full wp-image-30917\" src=\"\/\/www.freeautomechanic.com\/mechanic\/forum\/wp-content\/uploads\/2015\/12\/2002-saturn-sl2.jpg\" alt=\"4 Things an engine needs in order to run\" width=\"592\" height=\"325\" srcset=\"https:\/\/www.freeautomechanic.com\/mechanic\/forum\/wp-content\/uploads\/2015\/12\/2002-saturn-sl2.jpg 592w, https:\/\/www.freeautomechanic.com\/mechanic\/forum\/wp-content\/uploads\/2015\/12\/2002-saturn-sl2-300x165.jpg 300w\" sizes=\"(max-width: 592px) 100vw, 592px\" \/>My\u00a02000 Saturn SL2 will crank but wont turn over. I changed fuel pump and filter, crank sensor, ETC sensor, starter, spark plugs are good. A few months ago we changed the ignition coil. Why wont this car start?<\/p>\n<hr \/>\n<p>RESPONSE<\/p>\n<h4>4 Things an Engine Needs in order to Run<\/h4>\n<ol>\n<li>Spark<\/li>\n<li>Fuel &#8211; fuel pressure and fuel injector pulse<\/li>\n<li><a href=\"\/\/www.freeautomechanic.com\/what-is-compression-test.html\">Compression <\/a><\/li>\n<li>Timing &#8211; All of the above at the right time<\/li>\n<\/ol>\n<p>Knowing the 4 things an engine needs in order to run lets us know what to look for. Or better yet look for whats missing. If you know you have spark you may try spraying starter fluid in the air filter. If the engine tries to run on the starter fluid you know the problem is fuel related. And now you can concentrate on the problem system. When the engine doesn&#8217;t want to start on starting fluid the next step would be to confirm no spark at the spark plugs.<\/p>\n<h5>Engine still won&#8217;t start<\/h5>\n<p>I have created a handy no start diagnostic chart for just such an occasion.<\/p>\n<ul>\n<li><a href=\"\/\/www.freeautomechanic.com\/nostart.html\"><strong>No Start Diagnostics<\/strong><\/a><\/li>\n<\/ul>\n<h5>Check Engine Light On<\/h5>\n<p>Of course if the check engine light is on it would be a benefit to know why. For your vehicle though a scan tool will be needed.<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>My\u00a02000 Saturn SL2 will crank but wont turn over. I changed fuel pump and filter, crank sensor, ETC sensor, starter, spark plugs are good. A few months ago we changed the ignition coil. Why wont this car start? RESPONSE 4 Things an Engine Needs in order to Run Spark Fuel &#8211; fuel pressure and fuel&hellip;&nbsp;<a href=\"https:\/\/www.freeautomechanic.com\/mechanic\/forum\/2017\/03\/4-things-an-engine-needs-in-order-to-run\" rel=\"bookmark\">Read More &raquo;<span class=\"screen-reader-text\">4 Things an Engine Needs in order to Run<\/span><\/a><\/p>\n","protected":false},"author":14424,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"neve_meta_sidebar":"","neve_meta_container":"","neve_meta_enable_content_width":"","neve_meta_content_width":0,"neve_meta_title_alignment":"","neve_meta_author_avatar":"","neve_post_elements_order":"","neve_meta_disable_header":"","neve_meta_disable_footer":"","neve_meta_disable_title":"","footnotes":""},"categories":[7794,1,62],"tags":[11430,11431],"class_list":["post-51073","post","type-post","status-publish","format-standard","hentry","category-auto-repair-articles","category-auto-repair-questions","category-saturn","tag-4-things-an-engine-needs-in-order-to-run","tag-saturn-sl2"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v23.0 (Yoast SEO v27.4) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>4 Things an Engine Needs in order to Run - FreeAutoMechanic Advice<\/title>\n<meta name=\"description\" content=\"Knowing the 4 things an engine needs in order to run lets us know what to look for. Or better yet look for whats missing. If you know you have spark then\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.freeautomechanic.com\/mechanic\/forum\/2017\/03\/4-things-an-engine-needs-in-order-to-run\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"4 Things an Engine Needs in order to Run\" \/>\n<meta property=\"og:description\" content=\"Knowing the 4 things an engine needs in order to run lets us know what to look for. Or better yet look for whats missing. 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