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#1 |
![]() Join Date: Jun 2007
Location: Pensacola, Florida
Posts: 14
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I have a 1991 ZR1, 19,000 miles. I recently replaced my injectors. I intended to buy RCI injectors, made the call and the salesman suggested I buy another brand; stainless steel, and looked same as originals. Maybe that was my mistake. I changed out the injectors, with the help of Haibecks video. Everything went as planned. When I first started the car, it misfired for a short time, but when I drove it out of the yard, it started running ok. Now, when I first start it up, after not driving it for a while, i get smoke and rough idling. When I take it out and run it, it seems to run ok. Sometimes it runs rough at idle speed, but ok when i speed up. the insides of exhaust are very black, and i get small amount of black liquids dripping out. Any suggestions?
Thanks, IKen |
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#2 |
![]() Join Date: Mar 2007
Location: Crystal Lake, IL
Posts: 7,194
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did you check the fuel pressure? Are these FIC injectors?
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LGAFF 90 #966-150K miles-sold 92 #234-sold 1987 Callaway TT #17 1991 ZR-1 #1359 |
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#3 |
![]() Join Date: Jan 2009
Location: Portland Oregon metro area (Washington side)
Posts: 3,207
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The drips have got to be condensed water vapor.
Normal. Do check fuel pressure as has been suggested.
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Scott ![]() Vett owner since 1979._It's about the car and the people |
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#4 |
![]() Join Date: Dec 2004
Location: Jacksonville, FL USA
Posts: 4,645
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Please don't think me a wise guy, but on a 90 there is that difficult to connect vacuum hose that attaches at the lower right side of the T/B, I'm not too sure where it is on a 91....you got that one on right? Also I'd do a mental replay of connecting all the other vacuum hoses, the MAP hose too.
Your symptoms sound like a vacuum leak to me, JMHO ![]() ![]() Tom
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1990 ZR-1, Black/grey, #2233, stock. ZR-1 Net Reg Founding Member #316 & NCM member |
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