New Member RX-7 Technical Post your first technical questions here, in an easy flame free environment, before jumping into the main technical sections.

Hard Starting Rx7

Thread Tools
 
Search this Thread
 
Old 12-04-08, 01:35 PM
  #1  
GXL

Thread Starter
 
CobraS89's Avatar
 
Join Date: Mar 2008
Location: Detroit, MI
Posts: 158
Likes: 0
Received 0 Likes on 0 Posts
Hard Starting Rx7

ok i have an issue with my 7 in the morning the car will start right away but when its warmed up and i let it cool down for a half an hour it has a hard time starting like i half to give it gas for it to start and im not hitting fuel cut off because i only give it half throttle. lets say i turn it off for about 10 minutes while its warm then go in and start it and it will start right away. i dont know what the problem is. ive been messing with the lean and richness for some trial and error but i am having a hard time with it. please help me out with this issue.

i replaced the TPS and i set it to 1 volt/ohm (wutever u call it) warm so thats not the problem.

let me know what you guys think the problem could be.
Old 12-04-08, 01:39 PM
  #2  
Engine, Not Motor

iTrader: (1)
 
Aaron Cake's Avatar
 
Join Date: Feb 2001
Location: London, Ontario, Canada
Posts: 29,789
Likes: 0
Received 109 Likes on 92 Posts
The lean/rich pot only adjusts the mixture at idle.

Hot start issues are commonly caused by leaking injectors. Another cause is low compression.
Old 12-04-08, 01:43 PM
  #3  
GXL

Thread Starter
 
CobraS89's Avatar
 
Join Date: Mar 2008
Location: Detroit, MI
Posts: 158
Likes: 0
Received 0 Likes on 0 Posts
ah ok well thats good to know. i dont think i have low compression but how do you do a compression check? the engine runs very strong
Old 12-04-08, 01:58 PM
  #4  
GXL

Thread Starter
 
CobraS89's Avatar
 
Join Date: Mar 2008
Location: Detroit, MI
Posts: 158
Likes: 0
Received 0 Likes on 0 Posts
Originally Posted by Aaron Cake
The lean/rich pot only adjusts the mixture at idle.

Hot start issues are commonly caused by leaking injectors. Another cause is low compression.

the injectors are not leaking either could the injectors possibly just be bad?
Old 12-04-08, 02:03 PM
  #5  
GXL

Thread Starter
 
CobraS89's Avatar
 
Join Date: Mar 2008
Location: Detroit, MI
Posts: 158
Likes: 0
Received 0 Likes on 0 Posts
forgot to mention the engine is streetported but i dont know what size port it is the guy i bought it off of just told me that. engine was rebuilt with only about 40k on it now. idk if the streetporting would have anything to do with the starting...
Old 12-04-08, 04:08 PM
  #6  
Engine, Not Motor

iTrader: (1)
 
Aaron Cake's Avatar
 
Join Date: Feb 2001
Location: London, Ontario, Canada
Posts: 29,789
Likes: 0
Received 109 Likes on 92 Posts
How do you know the injectors are not leaking? Have they been professionally cleaned and tested?
Old 12-04-08, 11:35 PM
  #7  
GXL

Thread Starter
 
CobraS89's Avatar
 
Join Date: Mar 2008
Location: Detroit, MI
Posts: 158
Likes: 0
Received 0 Likes on 0 Posts
Originally Posted by Aaron Cake
How do you know the injectors are not leaking? Have they been professionally cleaned and tested?
no but good point i will have that done asap then move on from there i will let you know when thats done
Old 12-19-08, 12:09 PM
  #8  
GXL

Thread Starter
 
CobraS89's Avatar
 
Join Date: Mar 2008
Location: Detroit, MI
Posts: 158
Likes: 0
Received 0 Likes on 0 Posts
found out there was a fuel line that wasn't actually a fuel line i had to replace it with an official line for fuel and now it starts right up every time thanks for your help everyone. i actually have one more question. when i was driving last night my interior lights flicked once or twice im not sure what it could be maybe its just from the cold weather let me know what you guys think. thanks
Old 12-22-08, 02:45 PM
  #9  
GXL

Thread Starter
 
CobraS89's Avatar
 
Join Date: Mar 2008
Location: Detroit, MI
Posts: 158
Likes: 0
Received 0 Likes on 0 Posts
it has been about 10 degrees here in detroit and my car is taking extremely long to warm up almost like it doesnt want to it only warms up about half of what it should be. do you think my thermostat is worn out? or maybe i need a radiator flush?
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Kyo
2nd Generation Specific (1986-1992)
6
04-13-19 09:24 AM
Azevedo
Other Engine Conversions - non V-8
26
03-01-19 09:19 PM
sherff
Adaptronic Engine Mgmt - AUS
9
02-24-19 12:09 PM
alphawolff
1st Generation Specific (1979-1985)
17
11-17-15 05:57 PM



Quick Reply: Hard Starting Rx7



All times are GMT -5. The time now is 11:09 AM.