http://www.autotropolis.com/cs/forums/410/ShowForum.aspxDiscussions directly related to the Chevrolet Camaro—For owners, potential buyers and enthusiastsenCommunityServer 2.1 (Build: 60809.935)http://www.autotropolis.com/cs/forums/thread/31601.aspxSun, 02 Mar 2008 21:19:28 GMT47d518e0-6f86-4bcb-9b63-62b215176eac:31601bigford100http://www.autotropolis.com/cs/forums/thread/31601.aspxhttp://www.autotropolis.com/cs/forums/commentrss.aspx?SectionID=410&PostID=31601<p>I have a 1983 Camaro Cross Fire Injection.&nbsp; The car had been running fine, then it got to where it would accelerate.&nbsp; It would backfire up through the breather and not open up.&nbsp; I replaced the O2 sensor and the fuel filter but it did not help.&nbsp; Then it got to where it wouldn&#39;t start.&nbsp; A new set of plugs got it to start again but it still will not open up.&nbsp; I had a mechanic to&nbsp;check it out and he said my catalytic converter was stopped up and he cut the exhaust off in front of the converter.&nbsp; It still has the same problem but he said that once i got a new converter put on, it should fix the problem because it did not have any back pressure with the exhaust cut off.&nbsp; I asked if he checked the fuel pump pressure and he said he did.&nbsp; It had just enough pressure at idle, but when accelerated, it lost all pressure.&nbsp; He said this was due to no back pressure.&nbsp; Is this the case or is the fuel pump on my car in need of replacement? </p><p>Thanks.</p>